Initial setup of repository

- MacOS solution file
- MacOS project files for game and unit test library
- implemented CC3Vector/ CC3VectorUnitTests
Added six foundation CC3 structures and unit test for CC3Viewport

* CC3BoundingBox
* CC3Plane
* CC3Quaternion
* CC3Ray
* CC3Vector4
* CC3Viewport
* CC3ViewportUnitTests
Cosmetic changes to CC3Vector structure