Expose a few primitive builders, which seemed to be missed? (#17454)

Some primitives seems to have their export being missed, we can see in
the documentation that types are not followable: :
[CuboidMeshBuilder](https://docs.rs/bevy/latest/bevy/math/prelude/struct.Cuboid.html#impl-Meshable-for-Cuboid)
is not exposed.

This Pr addresses this, + its surrounding modules which were around.

crates/bevy_mesh/src/primitives/dim3/mod.rs

@@ -12,7 +12,10 @@ pub(crate) mod triangle3d;
 pub use capsule::*;
 pub use cone::*;
 pub use conical_frustum::*;
+pub use cuboid::*;
 pub use cylinder::*;
 pub use plane::*;
 pub use sphere::*;
+pub use tetrahedron::*;
 pub use torus::*;
+pub use triangle3d::*;