TypeSize() always reports 4 bytes

[CodyFagley]

(See TypeSize() in Context Manager)

Right now, the size of all types is 4, because it was easiest to work with 32-bit integers in early testing. This should instead report the actual size for the requested TypeID.

It is most efficient for this to stay 4 by default, but as the type's size grows beyond 8 bytes, this should update as well.