AABB collision resolution

Helpers for resolving AABB collisions would be really helpful for implementing simple platformer physics. The hit detection that exists in KorGE at the moment is too limited and doesn't include resolution, and Box2D is often overkill for these sorts of games. At the moment, it seems like one would need to roll their own solution for this kind of thing.

For a reference implementation, I'd look at [bump.lua](https://github.com/kikito/bump.lua), made for LÖVE, which handles tunneling, and has multiple different resolution methods.

Would also love to see support for slopes. I think that's a common enough use case that shouldn't warrant stepping into Box2D territory

No repository files or tests are named. Start by locating KorGE's existing hit-detection implementation and compare its scope with the bump.lua reference; done would require a defined set of AABB resolution helpers, including the requested tunneling, resolution-method, and slope support.

Written by the indexing model from the issue text.