Implement Track-Cluster Subtraction (PFA1)

[ruse-traveler]

Briefly, what does this PR introduce?

This PR implements the TrackClusterSubtraction algorithm, which ingests clusters from a specified EMCal and HCal, subtracts the sum of energy of all tracks pointing to each cluster, and returns the remnants of the subtracted clusters.

This is the first stage of our baseline Particle Flow routine, PFAlpha. The following stages will be implemented in subsequent PRs.

What kind of change does this PR introduce?

• Bug fix (issue #__)
• New feature (issue Reconstruction: **[Particle Flow]** Implementation of PF algorithm + factories #900, More Robust Neutral Identification in Reconstruction #1341, Ensure modularity of PF Reconstruction #1632)
• Documentation update
• Other: __

Please check if this PR fulfills the following:

• Tests for the changes have been added
• Documentation has been added / updated
• Changes have been communicated to collaborators

Does this PR introduce breaking changes? What changes might users need to make to their code?

No.

Does this PR change default behavior?

Yes. By default, new output collections of clusters will be produced which are labeled SubtractedClusters.

To-Do

• [] Migrate relevant WIP from Implement Particle Flow Alpha #1186 to new algorithm/factories
• [] Finish outstanding comments on relevant WIP
• [] Determine initial parameters