ci: make workflow to verify samples, list all subdirs #635

Job	Run time
Java tests (swift:6.1.2 jdk:Corretto os:jammy)	10m 6s
Swift tests (swift:6.1.2 jdk:Corretto os:jammy)	5m 14s
verify-samples / construct-samples-matrix	6s
soundness / Shell check	32s
soundness / Broken symlinks check	6s
soundness / Unacceptable language check	6s
soundness / License headers check	8s
soundness / YAML lint check	7s
soundness / Documentation check	44s
soundness / Python lint check	8s
soundness / API breakage check	0s
soundness / Format check	0s
	17m 17s

Provide feedback