feat(policies): add attestation phase lifecycle control (#2765) #343

Job	Run time
test / Test (controlplane)	6m 51s
test / Test (main-module)	4m 59s
test / Test (artifact-cas)	1m 28s
test / Test (cli)	3m 14s
init_attestation	10s
Release CLI and control-plane/artifact-cas container images	15m 3s
Finish Attestation	7s
modify_release_notes	0s
	31m 52s

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