PWGHF: revamp MC validation task (#5611)

* Remove J/Psi

* Add folder structure

* Add check on decay chain for generated particles

* Fix matching

* Don't exit if momentum is not conserved

* Improve rejection of spurious charm and beauty

* Clang format

* Add Dplus to KKpi and Lc to pK0s + check decay chain

* Factorise histogram filling

* Add protection for mother not found

Author: fcatalan92