Draft: TRD hitfinder improvements.
The current state of my version of the TRD 1D and 2D hitfinders, for viewing by @a.bercuci and @p.kaehler.
This is still a work in progress, but as of now it is able to process one of the high-multiplicity problem-timeslices with around 15 million TRD digis in around 5 seconds.