Transform2D overhaul

[SoloByte]

I am not 100% happy with Transform2d struct yet.

• [ ] Add a matrix based transform struct (TransformMatrix2D)
• [ ] Add a scale member to Transform2D
• [ ] Rename Size to BaseSize
• [ ] Size => BaseSize * Scale
• [ ] Polygon can use scale member
• [ ] Other things can still use size and have access to easy scaling as well
• [x] ~I might add an Offset2d struct that represents Translation, Rotation change, and Scale~
• [x] ~Alternatively I could add an Add/RemoveOffset(Transform2d offset) functions to the Transform2d struct instead of adding an Offset2d struct~
• [x] ~Transform2d operater +/- can be used to apply a transform2d as an offset where sizes are added together.~
• [x] ~Transform2d +/- Offset2d scales the size in transform based on the offsets scale value.~