feat(rpc): initial prototype for the v2 environments API #14754

Job	Run time
CLI Integration Tests	4m 12s
Integration Tests (api/cache)	4m 0s
Integration Tests (api/cachetls)	4m 10s
Integration Tests (api/snapshot)	4m 1s
Integration Tests (api/ofrep)	3m 57s
Integration Tests (fs/git)	4m 2s
Integration Tests (fs/local)	4m 11s
Integration Tests (fs/s3)	4m 16s
UI Integration Tests	3m 52s
Integration Tests (fs/azblob)	4m 4s
Integration Tests (fs/gcs)	4m 4s
Integration Tests (import/export)	4m 17s
Integration Tests (authn)	4m 2s
Integration Tests (authz)	3m 49s
Integration Tests (audit/webhook)	3m 56s
Integration Tests (audit/webhooktmpl)	4m 8s
	1h 5m 1s

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