Add Run3 reco NSW performance test

Merged Nicolas Koehler requested to merge nkoehler/athena:muArtPerf into 21.3


this MR adds an ART test for the performance of the NSW reconstruction running on 1000 di-muon events for 1.3<|eta|<2.7 using the symmetric NSW layout.

Adding @kluit, @pscholer, @rosati for their information

Best, Nico

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