finish vector, point and matrix api

[joao-novo]

missing:

• all of the point api things (should be easy once the vector part is done)
• actually making the code good and safe

[joao-novo]

the vector api is basically done now, all that's missing is a way to run the matrix transformation by rotating and scaling separately using Singular Value Decomposition

[joao-novo]

the rotate then scale is basically done, but there are a few bugs. since im not really feeling like fixing them ill just postpone that

[joao-novo]

no longer working on this issue for now, ill come back later once i finish the other api related issues