Subset collections

[madbaron]

This PR brings in a few quality of life improvements

BEGINRELEASENOTES

• Updated various filter processors to output subset collections for better memory performance
• Fixed bug in hit-to-simhit relation propagation in filter processors
• Added argument to filter tracker hits based on 3D distance from helix
  ENDRELEASENOTES

[Copilot]

Pull Request Overview

This PR brings quality of life improvements to filter processors by implementing subset collections for better memory performance, fixing hit-to-simhit relation propagation bugs, and adding 3D distance-based filtering capabilities.

• Refactored filter processors to use subset collections instead of creating new hit objects, reducing memory overhead
• Fixed bug in hit-to-simhit relation propagation by properly using LCRelationNavigator
• Added argument to filter tracker hits based on 3D distance from helix in addition to angular distance

Reviewed Changes

Copilot reviewed 6 out of 6 changed files in this pull request and generated 5 comments.

Show a summary per file

File	Description
source/Utils/src/FilterTracks.cc	Added debug logging for calorimeter state filtering
source/Utils/src/FilterTimeHits.cc	Refactored to use subset collections and fixed relation handling with LCRelationNavigator
source/Utils/src/FilterConeHits.cc	Major refactor using subset collections, added 3D distance filtering, and improved relation handling
source/Utils/src/FilterClusters.cc	Enhanced with subset collections, improved theta binning logic, and added diagnostic histograms
source/Utils/include/FilterConeHits.h	Added member variable for 3D distance cut parameter
source/Utils/include/FilterClusters.h	Added histogram members and reorganized class structure

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