refactor!: Move and Grid Density finders to cpp

[paulgessinger]

This PR moves

• GaussianGridTrackDensity
• GridDensityVertexFinder

to cpp files. It has to refactor the interface a bit to make this possible, mostly, the grid sizes become runtime arguments instead of compile-time parameters. This then also changes the internal grid eigen objects to be dynamic, which I think should be fine because we essentially only do lookups on them.

Part of:

• refactor: Vertex implementation #2842

Blocked by:

• refactor!: ImpactPointEstimator moves to cpp file #2971

[codecov]

Codecov Report

Attention: Patch coverage is 65.95745% with 16 lines in your changes are missing coverage. Please review.

Project coverage is 48.70%. Comparing base (6a25545) to head (ffac673).

Files	Patch %	Lines
Core/src/Vertexing/GaussianGridTrackDensity.cpp	75.86%	0 Missing and 7 partials ⚠️
...nclude/Acts/Vertexing/GaussianGridTrackDensity.hpp	45.45%	4 Missing and 2 partials ⚠️
Core/src/Vertexing/GridDensityVertexFinder.cpp	50.00%	0 Missing and 2 partials ⚠️
...include/Acts/Vertexing/GridDensityVertexFinder.hpp	66.66%	0 Missing and 1 partial ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2973      +/-   ##
==========================================
- Coverage   48.72%   48.70%   -0.03%     
==========================================
  Files         493      493              
  Lines       28968    28976       +8     
  Branches    13790    13798       +8     
==========================================
- Hits        14114    14112       -2     
- Misses       4930     4935       +5     
- Partials     9924     9929       +5     

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[github-actions]

📊: Physics performance monitoring for ffac673

Full contents

physmon summary

• ✅ CKF truth_smeared
• ✅ IVF truth_smeared
• ✅ AMVF truth_smeared
• ✅ Track Summary CKF truth_smeared
• ✅ Seeding truth_estimated
• ✅ CKF truth_estimated
• ✅ IVF truth_estimated
• ✅ AMVF truth_estimated
• ✅ Track Summary CKF truth_estimated
• ✅ Seeding seeded
• ✅ CKF seeded
• ✅ IVF seeded
• ✅ AMVF seeded
• ✅ AMVF (+grid seeder) seeded
• ✅ Track Summary CKF seeded
• ✅ Seeding orthogonal
• ✅ CKF orthogonal
• ✅ IVF orthogonal
• ✅ AMVF orthogonal
• ✅ Track Summary CKF orthogonal
• ✅ Ambisolver seeded
• ✅ Ambisolver orthogonal
• ✅ Seeding ttbar
• ✅ CKF ttbar
• ✅ Ambisolver
• ✅ Track Summary CKF ttbar
• ✅ AMVF ttbar
• ✅ AMVF (+grid seeder) ttbar
• ✅ Truth tracking (GSF)
• ✅ Truth tracking
• ✅ Truth tracking (GX2F)
• ✅ Particles fatras
• ✅ Particles geant4

[paulgessinger]

Now this has some changes that we might want to discuss @andiwand: The grid size becomes a runtime parameter, which is taken from the configuration.

[andiwand]

making this is runtime config makes total sense to me. no clue why this was a template parameter in the first place

[paulgessinger]

Should be ready @andiwand.

[acts-project-service]

✅ Athena integration test results [5eb39c3]

✅ All tests successful

status	job	report
🟢	run_unit_tests
🟢	test_ActsEFTrackFit
🟢	test_ActsBenchmarkWithSpot
🟢	test_ActsConversionWorkflow
🟢	test_ActsWorkflow
🟢	test_ActsValidateAmbiguityResolution
🟢	test_ActsValidateResolvedTracks
🟢	test_ActsValidateTracks
🟢	test_ActsValidateActsCoreSpacePoints
🟢	test_ActsValidateActsSpacePoints
🟢	test_ActsValidateSeeds
🟢	test_ActsValidateOrthogonalSeeds
🟢	test_ActsValidateClusters
🟢	test_ActsPersistifyEDM
🟢	test_ActsGSFRefitting
🟢	test_ActsKfRefitting
🟢	test_ActsExtrapolationAlgTest
🟢	test_ActsITkTest
🟢	run_workflow_tests_run4_mc
🟢	run_workflow_tests_run2_mc
🟢	run_workflow_tests_run2_data
🟢	run_workflow_tests_run3_mc
🟢	run_workflow_tests_run3_data
🟢	run_art_test: test_data18_13TeV_1000evt
🟢	run_art_test: test_ttbarPU40_reco