feat(maitake-sync): Add `wait_for` and `wait_for_value` to WaitCell a… #1354

Job	Run time
changed_paths	4s
rustfmt	16s
cargo check (host)	3m 30s
build boot image (x86_64)	3m 7s
clippy	3m 3s
cargo test (host)	5m 1s
Loom tests (cordyceps)	1m 38s
Miri tests (codyceps)	2m 0s
docs	4m 25s
Tests (maitake, no-default-features)	1m 38s
cargo test (cross x64)	4m 19s
Loom tests (maitake)	4m 33s
Loom tests (mycelium-util)	52s
	34m 26s

Provide feedback