Add Support for Threadsafe and NotThreadSafe annotations #387

Job	Run time
Java tests (swift:6.0.2 jdk:Corretto os:jammy)	6m 26s
Swift tests (swift:6.0.2 jdk:Corretto os:jammy)	3m 48s
Verify Samples (swift:6.0.2 jdk:Corretto os:jammy)	12m 8s
soundness / API breakage check	0s
soundness / License headers check	4s
soundness / Documentation check	35s
soundness / Unacceptable language check	5s
soundness / Format check	0s
soundness / Broken symlinks check	2s
soundness / Python lint check	5s
soundness / Shell check	35s
soundness / YAML lint check	4s
	23m 52s

Provide feedback