Add feature to use high-quality starship calls to also help label PAVs from graph as SLRs

Use large similarly/aligned regions to label PAVs as SLRs
Helps with captain loss and Starships potentially split by SVs separating regions with and without the captain.
Will need to define what is the minimum identity and size of the alignment, and probably in reference to the size of the PAV also
Could be very strict...see if it helps at all