Collision mesh utilities (creation/exporting)

[DrChat]

In order to become a full replacement, VPhysics needs to support collision mesh creation, manipulation, and mesh exportation.

• To achieve mesh manipulation, qhull must be used (bullet doesn't support this stuff I don't believe)
• New file format must be created for mesh exportation. Will allow for new features such as directly supporting raw convex shapes such as cylinders, spheres, etc.