This effectively doesn't do much for the time being since there's only one "Dat type" that's being used. Realistically, this is probably the best bet since a given DAT should not be restricted to an output type as much as an ItemType is bound to its data. This also removes the experimental classes that won't be in use for forever. More work still might need to be done but it is unknown at this point.
This massive change replaces the old "Rom" struct system with a new one that have different objects for each major item type. This required a lot of work and a lot of changes and has unfortunately been untested. But this is the first step in moving away from using structs. The next major step is converting Dat over to this as well.
Writing to torrentzip works but for some reason the compressed streams are not being generated at the correct size. This is odd and seems to only affect newly added files and not ones copied from other archives. Also, found some glaring flaws in the headered output that explains why I was having issues previously. Typos D=
