Combine similar files

[mtalyat]

Some things can be combined so there are less files and less things being compiled in general. Such as:

• The builder structs can be combined with their associated types.
• All the glm math types can be combined into one file.
• etc.

[mtalyat]

Already moved builder structs, still need to do other things

[mtalyat]

GLM types are fine actually. Still want to combine rect types into M_Rect.h.