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Draft: First implementation of new selection tool for BJT

Chris Malena Delitzsch requested to merge cdelitzs/athena:main-BJT-selection into main

As discussed at HCW (see this contribution), we would like to rewrite and simplify BoostedJetTaggers as it is currently doing the decoration of the tagger score, the cut on it and the scale factors all in one place. The idea would be to split this into different parts following what is being done e.g. for JVT (ATLJETMET-1642)

  1. Decorate the jet with the tagger score --> will happen in the derivations (@angianni is working on this part)
  2. Apply a cut on the tagger score depending on the used working point --> in this MR
  3. Retrieve efficiency / inefficiency scale factors --> to follow

The q/g tagger still needs to be implemented. The idea would be to create a different class using the BoostedTaggerSelectionToolBase as well to keep it clean and not have too many if criteria to distinguish which moments we would like to add.

Marking this as a draft at the moment as I still need to validate / test it but looking forward to some comments from the tagging community and JSV experts: @rles @jzahredd @bhodkins @stapiaar @jdandoy @fballi

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