PWGLF: PbPb V0 debug + findable study + modularity, optimisations (#5387)

* PWGLF: preparations for debug + findable study

* Please consider the following formatting changes (#269)

* Add V0 selections on detector properties QA plots + re-shuffle selections on TPC/TOF QA plots

* Refactor QAs to be flat, no dependence on each other, isolate heavy QA

* Refactor / improve organization, doDetectPropQA 2 mode added

* Do filling of 5d histos if desired

* Please consider the following formatting changes (#270)

---------

Co-authored-by: ALICE Builder <alibuild@users.noreply.github.com>
Co-authored-by: romainschotter <romain.schotter@gmail.com>

Author: 3 people