PWGDQ: add PbPb 5.36 TeV Bottomonia generator parameters

[iamkoushikb-bit]

This PR extends the injected bottomonia gap-trigger generator to support Pb–Pb collisions at 5.36 TeV.

• Added a new Pb–Pb bottomonia cocktail generator:

  • GeneratorCocktailBottomoniaToMuonEvtGen_PbPb5TeV()

• Added a new generator selection:

  • case 1 in GeneratorPythia8InjectedBottomoniaGapTriggered()

• Added Pb–Pb-specific kinematic parameterizations for:

  • pt

  • rapidity

    for the generated bottomonia states.

• Integrated the new parameterizations into the Pb–Pb bottomonia cocktail generator.

The generator implementation and the corresponding Pb–Pb kinematic parameterization are tightly coupled and therefore have been combined into this PR to ensure that the implementation builds and can be tested independently.

The corresponding INI configuration that enables this new generator mode is provided in a separate PR.

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[iamkoushikb-bit]

Hi @iarsene, could you please review this PR at your convenience? Thank you!