Migrate collider to use explicit 2D hyperrectangles

Optimize returning mutable properties directly

Refactor flags API into separate properties (#3)

* Migrate flags

* Split up size flag

* Add size

* Redo flags API

Add filter

Add hyperrectangle.Normal distance

Add read-only DB interface

Update validation

Merge branch 'main' of github.com:downflux/go-data into main

Add team for projectiles

Move geometry lib into public view