[PWGCF] Add Fox-Wolfram correlation analysis task

[iulianflorinandreicovici-144]

This PR adds a new FoxWolframCorrelation.cxx analysis task to PWGCF/TwoParticleCorrelations/Tasks.

The task provides Fox-Wolfram moment based event-shape analysis together with same-event and mixed-event two-particle correlation studies. Main features include:

-computation of Fox-Wolfram moments;
-event selection based on Fox-Wolfram observables;
-multiplicity-dependent analysis;
-same-event two-particle correlations;
-mixed-event background correlations;
-support for trigger-associated and leading-track pair selections;
-derived tables used for the event-mixing stage.

The corresponding workflow is added to PWGCF/TwoParticleCorrelations/Tasks/CMakeLists.txt.

[github-actions]

O2 linter results: ❌ 0 errors, ⚠️ 40 warnings, 🔕 0 disabled

[alibuild]

Error while checking build/O2Physics/code-check for 1875e69 at 2026-09-29 11:44:

## sw/BUILD/O2Physics-code-check-latest/log
--
========== List of issues found ==========
++ echo 'Found 1 errors and 0 warnings.'
Found 1 errors and 0 warnings.
++ [[ 1 -gt 0 ]]
++ cat /sw/BUILD/4a3daf752ea18b56d722bdb4b26542517f5994c5/O2Physics-code-check/errors.txt
PWGCF/TwoParticleCorrelations/Tasks/FoxWolframCorrelation.cxx:26:1: error: included header NameConf.h is not used directly [misc-include-cleaner,-warnings-as-errors]
++ [[ 0 -gt 0 ]]
++ [[ 1 -gt 0 ]]
++ exit 1
--

Full log here.