Accept IntoIterator for Collider::compound instead of Vec

[Shatur]

You convert it into iterator anyway:

avian/src/collision/collider/parry/mod.rs

Lines 668 to 683 in 7d79ca1

	pub fn compound(
	shapes: Vec<(
	impl Into<Position>,
	impl Into<Rotation>,
	impl Into<Collider>,
	)>,
	) -> Self {
	let shapes = shapes
	.into_iter()
	.map(|(p, r, c)| {
	(
	make_isometry(*p.into(), r.into()),
	c.into().shape_scaled().clone(),
	)
	})
	.collect::<Vec<_>>();

It would be nice to be able to avoid extra allocations.