[PWGDQ] Add converter for updated REDUCEDMCEVENT table (ReducedInfoTables.h, CMakeList.txt, new task)

[torkjellsdatter]

This PR introduces a table converter to handle updates in the REDUCEDMCEVENT table structure, introduced by #13569

Table definitions

Added two explicit table definitions in ReducedInfoTables.h:

• ReducedMCEvents_000 — the old version of the REDUCEDMCEVENT table
• ReducedMCEvents_001 — the new version including the additional variables

Converter task

Implemented a new converter task: ModelConverterReducedMCEvents

• Reads from ReducedMCEvents_000 (old table)
• Converts to ReducedMCEvents_001 (new table)
• Sets newly introduced variables to -1 by default

Build integration

• Updated CMakeLists.txt to include the new converter in the build system.

Usage

The converter can be run as part of the analysis chain:

o2-analysis-dq-efficiency-with-assoc -b --configuration json://config.json \
  | o2-analysis-dq-model-converter-mc-reduced-event -b --configuration json://config.json

[github-actions]

O2 linter results: ❌ 149 errors, ⚠️ 11 warnings, 🔕 0 disabled

[lucamicheletti93]

Thanks a lot for adding the converter!