Add --list-inputs option to all OSRM tools for deployment scripts

[afarber]

Issue

Fixes #2865

This PR adds a --list-inputs option to all OSRM tools that outputs the required and optional input file extensions. This helps deployment scripts know which files need to be copied for each tool.

Example usage:

$ osrm-routed --list-inputs
required .osrm.datasource_names
required .osrm.ebg_nodes
required .osrm.edges
...                                                                                                                            
optional .osrm.hsgr                                                                                                            
optional .osrm.cells

Tasklist

• CHANGELOG.md entry (How to write a changelog entry)
• update relevant Wiki pages
• add tests (see testing documentation)
• review
• adjust for comments

Requirements / Relations

#3920

[Copilot]

Pull request overview

This PR adds a --list-inputs command-line option to all OSRM tools (osrm-routed, osrm-datastore, osrm-partition, osrm-extract, osrm-customize, osrm-contract) to help deployment scripts identify which input files are required and optional for each tool. This addresses issue #2865 by providing a programmatic way to determine file dependencies without hardcoding them in deployment scripts.

Changes:

• Added ListInputFiles() method to IOConfig class that outputs required and optional input file extensions
• Integrated --list-inputs option into all six OSRM command-line tools
• Added comprehensive unit tests for the new functionality

Reviewed changes

Copilot reviewed 10 out of 10 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
include/storage/io_config.hpp	Adds ListInputFiles method to IOConfig base class to output required/optional file extensions
unit_tests/storage/io_config.cpp	Comprehensive unit tests for ListInputFiles covering various scenarios including empty strings and edge cases
src/tools/routed.cpp	Adds --list-inputs option to osrm-routed command-line interface
src/tools/store.cpp	Adds --list-inputs option to osrm-datastore command-line interface
src/tools/partition.cpp	Adds --list-inputs option to osrm-partition command-line interface
src/tools/extract.cpp	Adds --list-inputs option to osrm-extract command-line interface
src/tools/customize.cpp	Adds --list-inputs option to osrm-customize, lists both main config and updater config files
src/tools/contract.cpp	Adds --list-inputs option to osrm-contract, lists both main config and updater config files
docs/routed.md	Documents the new --list-inputs option with usage examples
CHANGELOG.md	Adds entry for the new feature under Misc section

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