build

Add `add_to_queue` to `Spirc` #233

Job	Run time
cargo +1.85 test (ubuntu-latest)	2m 21s
cargo +stable test (windows-latest)	3m 46s
cargo +1.85 test (windows-latest)	3m 22s
cargo +stable test (ubuntu-latest)	1m 55s
	11m 24s

Provide feedback