[PWGLF] Add QC task for grouping tests + update sigma0builder

[gianniliveraro]

This PR introduces a new task (sigma0QC) to evaluate the performance of different V0 grouping strategies in O2Physics using strangeness derived data.

It enables a direct comparison between four grouping approaches:

• Grouping via collision iterator;

• Grouping using Preslice;

• Grouping using PresliceUnsorted;

• Custom grouping using a simple std::vector<std::vector<>>.

Each approach is implemented in a separate struct. The base template, defined in "sigma0BuilderHelper.h", follows the logic of the sigma0builder task: V0s are grouped per collision, filtered using photon- and lambda-like criteria, and combined to build Sigma0 candidates.

Additionally, this PR also updates the sigma0builder task to adopt the custom grouping strategy for analysis.

Tagging @ddobrigk and @romainschotter for completeness.

[github-actions]

O2 linter results: ❌ 298 errors, ⚠️ 0 warnings, 🔕 0 disabled

[alibuild]

Error while checking build/O2Physics/o2 for 242f55c at 2025-07-11 20:56:

## sw/BUILD/O2Physics-latest/log
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:240:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:241:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:242:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:265:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:321:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:352:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:383:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:384:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:409:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:410:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:411:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:416:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:421:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:422:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:240:34: error: 'HIST' was not declared in this scope
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:241:34: error: 'HIST' was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:242:34: error: 'HIST' was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:352:34: error: 'HIST' was not declared in this scope
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:383:34: error: 'HIST' was not declared in this scope
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:384:34: error: 'HIST' was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:265:34: error: 'HIST' was not declared in this scope
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:321:34: error: 'HIST' was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:409:34: error: 'HIST' was not declared in this scope
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:410:34: error: 'HIST' was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:411:34: error: 'HIST' was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:416:34: error: 'HIST' was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:421:34: error: 'HIST' was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:422:34: error: 'HIST' was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:352:34: error: 'HIST' was not declared in this scope
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:383:34: error: 'HIST' was not declared in this scope
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:384:34: error: 'HIST' was not declared in this scope, and no declarations were found by argument-dependent lookup at the point of instantiation
ninja: build stopped: subcommand failed.


## sw/BUILD/d1c8b1adec849ed919b430bba044773712d42c70-latest/log
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:240:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:241:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:242:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:265:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:321:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:352:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:383:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:384:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:409:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:410:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:411:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:416:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
/sw/SOURCES/O2Physics/12027-slc9_x86-64/0/PWGLF/Utils/sigma0BuilderHelper.h:421:30: error: there are no arguments to 'HIST' that depend on a template parameter, so a declaration of 'HIST' must be available [-fpermissive]
[0 more errors; see full log]

Full log here.

[ddobrigk]

O2 compile error is spurious (from before the fix), newest O2 CI should work