Utility: Add utility for automatically updating positions on tile set surface

[gkjohnson]

Add a utility for querying when tiles change and only perform raycasts when needed. Ie when a tile that might be hit toggles in visibility. This can be used to automatically settle objects on a tile set surface.

More query capabilities could be provided, as well, when tiles change. Like tiles that fade in and out in a box or sphere bounds, etc. Useful for any kinds of surface projections.

Should account for multiple tile sets, static geometry from user.