feat: add support for Voxels collider (#823)

* feat: start adding voxels support and some additional testbed demo settings

* feat: add support for parry’s new Voxels collider shape

* fix voxels demos

* feat: support rectangular voxels and additional voxels initialization

* chore: switch to parry 0.20

* chore: fix cargo doc

* Fix testbed build

examples3d/all_examples3.rs

@@ -1,4 +1,5 @@
 #![allow(dead_code)]
+#![allow(clippy::type_complexity)]
 
 #[cfg(target_arch = "wasm32")]
 use wasm_bindgen::prelude::*;
@@ -58,6 +59,7 @@ mod trimesh3;
 mod urdf3;
 mod vehicle_controller3;
 mod vehicle_joints3;
+mod voxels3;
 
 #[cfg_attr(target_arch = "wasm32", wasm_bindgen(start))]
 pub fn main() {
@@ -87,6 +89,7 @@ pub fn main() {
         ("Spring Joints", spring_joints3::init_world),
         ("TriMesh", trimesh3::init_world),
         ("Urdf", urdf3::init_world),
+        ("Voxels", voxels3::init_world),
         ("Vehicle controller", vehicle_controller3::init_world),
         ("Vehicle joints", vehicle_joints3::init_world),
         ("Keva tower", keva3::init_world),