feat(maitake-sync): `mutex-traits` integration #1384

Job	Run time
changed_paths	11s
build boot image (x86_64)	1m 27s
Loom tests (cordyceps)	1m 32s
clippy	2m 4s
cargo check (host)	1m 55s
Miri tests (cordyceps)	2m 9s
docs	2m 13s
Loom tests (maitake)	4m 23s
Miri tests (maitake)	1m 4s
Tests (maitake, no-default-features)	1m 39s
rustfmt	15s
cargo test (host)	3m 48s
cargo test (cross x64)	1m 41s
Loom tests (mycelium-util)	1m 0s
all_systems_go	0s
	25m 21s

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