Add a dynamic ray-cast vehicle controller

examples3d/all_examples3.rs

@@ -44,6 +44,7 @@ mod primitives3;
 mod restitution3;
 mod sensor3;
 mod trimesh3;
+mod vehicle_controller3;
 
 fn demo_name_from_command_line() -> Option<String> {
     let mut args = std::env::args();
@@ -101,6 +102,7 @@ pub fn main() {
         ("Restitution", restitution3::init_world),
         ("Sensor", sensor3::init_world),
         ("TriMesh", trimesh3::init_world),
+        ("Vehicle controller", vehicle_controller3::init_world),
         ("Keva tower", keva3::init_world),
         ("Newton cradle", newton_cradle3::init_world),
         ("(Debug) multibody_joints", debug_articulations3::init_world),