[PWGLF] Optimised PID for kaon and pion tracks

[sawankumawat]

No description provided.

[github-actions]

O2 linter results: ❌ 13 errors, ⚠️ 0 warnings, 🔕 0 disabled

[dmallick2]

@sawankumawat please fix o2linter issue

[sawankumawat]

@sawankumawat please fix o2linter issue
@dmallick2
In the code, I apply pT-dependent PID, which requires using different nσ cut values at different pT intervals for both kaons and pions.
The O2 linter gives the error: Assign the value to a clearly named variable or constant.
However, assigning a name to every numeric cut value will create confusion and reduce the readability of the code, especially when many pT and PID ranges are used.