Add LiT CI job and runner cleanup action #2774

Job	Run time
build and lint code	4m 42s
RPC compilation check	1m 21s
SQL compilation check	9s
verify that auto-generated documentation is up-to-date	34s
run LiT unit tests	4m 6s
go mod check	9m 42s
run unit tests	18m 40s
	39m 14s

Provide feedback