cleanup: refactor auto research and split yamls #57

Job	Run time
build-only (client, examples, examples/autoresearch/Dockerfile)	1m 26s
build-only (gateway, src/server, src/server/Dockerfile.gateway)	1m 14s
build-only (server, src/server, src/server/Dockerfile)	2m 34s
	5m 14s

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