[PWGCF] Add Lambda-proton balance function analysis task

[Anoop1379]

This PR introduces the lambda-proton-balance-function analysis task (lambdaProtonBalanceFunction.cxx) under PWGCF/TwoParticleCorrelations/Tasks to measure single- and two-particle density correlations and evaluate the Lambda-proton balance function.

This contains:

1. Physics Observables:

• Computes rho1 and rho2 density distributions in (Delta-eta, Delta-phi) and (Delta-y, Delta-phi) unrolled spaces.
• Evaluates all baryon-baryon and baryon-antibaryon pairs (Lambda-p, Lambda-pbar, AntiLambda-p, AntiLambda-pbar) as well as p-p baseline and Lambda-Lambda pairs.
• Provides pT-differential pair correlation histograms.

2. Track and Particle Selections:

• Primary protons and antiprotons selected using standard TPC/ITS track quality, tight DCAxy/DCAz cuts, and combined TPC + TOF PID with configurable momentum switch threshold.
• Lambda and AntiLambda candidates reconstructed through V0 topological cuts (CosPA, decay radius, DCA to PV, daughter TPC nSigma PID, and K0s mass rejection window).

3. Corrections and QA Diagnostics:

• Primary proton vs. V0 daughter proton candidate overlap rejection (autocorrelation / split-track veto) with dedicated ProtonVetoQA diagnostics.
• Event-level pileup monitoring and cutflow tracking.

Validation:

• Passed o2_linter.py checks with 0 errors.
• Formatted according to ALICE conventions using clang-format.
• Executable registered in CMakeLists.txt.

[github-actions]

O2 linter results: ❌ 1 errors, ⚠️ 116 warnings, 🔕 0 disabled

[wenyaCern]

Hi @Anoop1379 , please fix the errors reported by the o2-linter check