GeneratorFilters: add xAODMuDstarFilter together with common fragment and ART test

it is an xAOD implementation of the MuDstarFilter, filter logic is the same only xAOD containers and variables are used

in addition common fragments for both MuDstarFilter and xAODMuDstarFilter are added

For info @vtudorac who wrote the main code of this xAOD filter

added Generators label

This merge request affects 1 package:

• Generators/GeneratorFilters

This merge request affects 5 files:

• Generators/GeneratorFilters/GeneratorFilters/xAODMuDstarFilter.h
• Generators/GeneratorFilters/share/common/MuDstarFilter.py
• Generators/GeneratorFilters/share/common/xAODMuDstarFilter_Common.py
• Generators/GeneratorFilters/src/components/GeneratorFilters_entries.cxx
• Generators/GeneratorFilters/src/xAODMuDstarFilter.cxx

added main review-pending-level-1 labels

CI Result SUCCESS (hash 5a4cd388)

	Athena	AthGeneration
externals
cmake
make
tests

Full details available on this CI monitor view. Check the JIRA CI status board for known problems
Athena: number of compilation errors 0, warnings 0
AthGeneration: number of compilation errors 0, warnings 0
For experts only: Jenkins output [CI-MERGE-REQUEST-EL9 7773] (remote access info)

MR looks fine from L1 perspective. But they are extensive. Passing to L2 for comments

Cheers, Qiyu, L1 shifter

removed review-pending-level-1 label

added review-pending-level-2 label