feat(api): Refactor API server to introduce support for Docker image registries and s3 bucket support #2157

Job	Run time
build-api	2m 6s
build-test-experiment-engine-plugin	31s
build-cluster-init	33s
build-router	1m 5s
build-ui	1m 57s
release-rules	3s
test-engines-experiment	28s
test-engines-router	2m 7s
test-api	3m 1s
test-e2e (In-cluster credentials; API e2e)	11m 47s
test-e2e (Remote cluster credentials; SDK e2e)	12m 23s
publish	0s
	36m 1s

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