feat(maitake-sync): `mutex-traits` integration #1385

Job	Run time
changed_paths	12s
cargo test (host)	4m 42s
clippy	2m 43s
cargo check (host)	3m 33s
Loom tests (cordyceps)	1m 37s
docs	2m 0s
rustfmt	20s
cargo test (cross x64)	4m 15s
build boot image (x86_64)	3m 0s
Miri tests (cordyceps)	1m 53s
Loom tests (maitake)	4m 30s
Miri tests (maitake)	17m 54s
Tests (maitake, no-default-features)	1m 43s
Loom tests (mycelium-util)	52s
all_systems_go	0s
	49m 14s

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