feat(maitake-sync): `mutex-traits` integration #1376

Job	Run time
changed_paths	10s
Loom tests (cordyceps)	1m 39s
clippy	3m 0s
build boot image (x86_64)	3m 25s
cargo check (host)	3m 45s
Miri tests (codyceps)	2m 14s
docs	4m 33s
Loom tests (maitake)	53s
Tests (maitake, no-default-features)	1m 54s
rustfmt	16s
cargo test (host)	3m 46s
cargo test (cross x64)	4m 15s
Loom tests (mycelium-util)	55s
	30m 45s

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