Add `ColliderConstructor::CuboidFromMesh`

[HugoPeters1024]

For more complex meshes I've using ColliderConstructor::TrimeshFromMesh with great pleasure. When I wanted to add a more simple collider I was surprised that there didn't seem to exist a way to constructor a simple bounding box given a mesh.

Of course I could figure out manually what the right dimensions are, but it would be so much easier and beneficial for the development cycle if this could be done automatically.

Thanks for your consideration, this plugin is absolutely amazing <3

[janhohenheim]

Note that the other constructors all just proxy parry to my knowledge, so this would be a bit of a break in tradition. Not that that's blocking, just mentioning it for consideration :)