Add LiT CI job and runner cleanup action #2768

Job	Run time
SQL compilation check	6s
RPC compilation check	1m 43s
build and lint code	4m 50s
run LiT tests	23m 20s
run unit tests	18m 47s
go mod check	11m 32s
verify that auto-generated documentation is up-to-date	30s
	1h 0m 48s

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