Muon integration into DD4hep

This goes together with Detector!115 (merged), Boole!371 (merged), Rec!2655 (merged), LHCb!3343 (merged), Alignment!242 (merged)

added new feature label

mentioned in merge request Detector!115 (merged)

mentioned in merge request LHCb!3343 (merged)

mentioned in merge request Rec!2655 (merged)

mentioned in merge request Boole!371 (merged)

added RTA label

assigned to @abrearod

@sponce ,please, let me know when this is ready to be tested.

mentioned in issue Moore#362 (closed)

mentioned in issue Moore#375 (closed)

mentioned in issue Moore#382 (closed)

mentioned in issue Moore#390 (closed)

added 499 commits

• adb486d1...73bf2638 - 498 commits from branch master
• 9c99bbe3 - Make Muon code ready for DD4hep integration

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resolved all threads

added hlt1-throughput-decreased label

• [2022-03-09 18:27] Validation started with lhcb-master-mr#3922
• [2022-03-10 17:26] Validation started with lhcb-master-mr#3939
• [2022-03-11 16:48] Validation started with lhcb-master-mr#3950
• [2022-03-22 16:39] Validation started with lhcb-master-mr#4054
• [2022-03-23 11:53] Validation started with lhcb-master-mr#4065
• [2022-03-25 11:38] Validation started with lhcb-master-mr#4085
• [2022-03-25 18:21] Validation started with lhcb-master-mr#4090
• [2022-03-28 16:44] Validation started with lhcb-master-mr#4101
• [2022-03-29 10:07] Validation started with lhcb-master-mr#4112

added 6 commits

• 9c99bbe3...0b12a15d - 5 commits from branch master
• ff0ca30a - Make Muon code ready for DD4hep integration

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removed hlt1-throughput-decreased label

added 1 commit

• 557b001d - Make Muon code ready for DD4hep integration

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added 1 commit

• ce287107 - Make Muon code ready for DD4hep integration

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