* feat(rapier_testbed): autosave testbed configuration + add support for per-example parameters
* feat(rapier_testbed): also save the camera position
* feat(rapier_testbed): improve ergonomics of example-specific settings
* chore: cargo fmt
* chore(rapier_testbed): small UI ergonomics improvement
* chore(rapier_testbed): clippy fixes
- Fix the wrong codepath taken by the solver for contacts involving a collider without parent.
- Properly adress the non-linear treatment of the friction direction
- Simplify the sleeping strategy
- Add an impulse resolution multiplier
update plugin signature to recieve bevy structs, add Arc<Mutex<>> around gfx_components, we we can get shared mutable access
add prefab_meshes() access function
Remove Arc<Mutex<>>
