Use a unstable sort to sort component ids in bevy_ecs

[Brezak]

Objective

While writing code for the bevy_ecs I noticed we were using a unnecessarily stable sort to sort component ids

Solution

• Sort component ids with a unstable sort
• Comb the bevy_ecs crate for any other obvious inefficiencies.
• Don't clone component vectors when inserting an archetype.

Testing

I ran cargo test -p bevy_ecs. Everything else I leave to CI.

Profiling

I measured about a 1% speed increase when spawning entities directly into a world. Since the difference is so small (and might just be noise) I didn't bother to figure out which of change if any made the biggest difference.

Tracy data

Yellow is this PR. Red is the commit I branched from.

Methodology

I created a system that spawn a 1000 entities each with the same 30 components each frame, and then I measured it's run time. The unusually high number of components was chosen because the standard library [will use a insertion sort for slices under 20 elements](https://github.com/rust-lang/rust/blob/0de24a5177b1d49d6304f76f3ab159faaec134f9/library/core/src/slice/sort.rs#L1048-L1049). This holds for both stable and unstable sorts.