Support "Generic" Track Atmospheric Forcing

[SorooshMani-NOAA]

Right now the BestTrackFrocing only accepts tracks that are from BestTrack files. In order to run forecast tracks, one needs to "hack" the forecast files by renaming the advisories to be equal to BEST. It'd be very helpful to have the ability to use a forecast track directly, e.g. with OFCL advisory instead of BEST