Algebra Math lib for Rendiation

The totally mix of some opensource math lib like cgmath aljabar;

We do not use the other matured math lib, because we want:

explore some more solid and useful abstraction
make sure the implementation is light weight and easy to maintain and understand
make strong connection with other rendiation infra for example shader-api

reference

use marco from cgmath heavily, but did some modification.

some innovational ideas

Normalized vec wrap type. Use type system to avoid unnecessary normalize.
Unit typed scalar and angle type. Use type system to avoid unit mis conversion.