Ambiguity resolution algorithms for tracking

[EBerzin]

The current CKFProcessor runs track finding for every seed. This results in a large number of duplicate tracks, particularly in the recoil tracker when using realistic seeding.

Describe the solution you'd like We would like to implement an ambiguity resolution algorithm (possibly multiple types) to remove duplicate tracks.

Describe alternatives you've considered Newer versions of ACTS do already have ambiguity resolution algorithms implemented, but tracking is currently based on an older version of ACTS that does not have those algorithms. We could switch to using the newest ACTS version, and use their ambiguity solvers directly. For now, to avoid dealing with the other problems that will likely come from that ACTS switch, and to allow for more flexibility when testing these algorithms, I think implementing them separately in ldmx-sw makes sense.