ci: restructure pipeline, skip ui-audit until re-org complete #4

Job	Run time
Conventional Commits	19s
Proto (generate + git diff)	1m 21s
UI test	1m 28s
UI lint	1m 0s
Go lint	4m 15s
Go unit-tests	2m 55s
Go fmt	25s
Build (gitops, gitops-server)	-1s
Build and push gitops-server image	0s
Goreleaser (gitops CLI)	0s
Build and push Helm chart	0s
	11m 42s

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