ACE.DatLoader unsupported file types

[Mag-nus]

We don't parse all the file types in the .dat files.

While the ones remaining likely aren't needed now, it might be a fun project for someone to take on, and may also prove useful for someone down the road.

You can see a list of incomplete file types here, in the UnpackPortalDatFiles_NoExceptions():
https://github.com/ACEmulator/ACE/blob/master/Source/ACE.DatLoader.Tests/DatTests.cs

[fartwhif]

SurfaceTexture #802