New Update functionality allows for manipulating every possible thing about a DAT in one location. A step up from just being able to convert. Also allows users to easily change a single thing across multiple DATs.
Secondarily, for sake of clarity, a couple new partial classes were spun off of DATabase until the menus can get cleaned up.
There are at least 2 separate changes that got intermingled on this one so I'm committing them all at the same time.
The first is massive overhauls to the Romba portion of DATFromDir. This part is still a work in progress.
The second is adding more items to the DatData struct to allow for better and more efficient stat collection.
