feat(policies): add attestation phase lifecycle control (#2765) #341

Job	Run time
test / Test (artifact-cas)	1m 27s
test / Test (cli)	3m 2s
test / Test (main-module)	4m 39s
test / Test (controlplane)	7m 58s
init_attestation	14s
Release CLI and control-plane/artifact-cas container images	15m 32s
Finish Attestation	0s
modify_release_notes	0s
test / Test (controlplane)	7m 58s
test / Test (cli)	3m 2s
test / Test (main-module)	4m 39s
test / Test (artifact-cas)	1m 27s
Release CLI and control-plane/artifact-cas container images	7m 30s
init_attestation	14s
Finish Attestation	1s
modify_release_notes	1s
test / Test (main-module)	4m 39s
Release CLI and control-plane/artifact-cas container images	11m 19s
test / Test (artifact-cas)	1m 27s
test / Test (controlplane)	7m 58s
init_attestation	14s
test / Test (cli)	3m 2s
Finish Attestation	0s
modify_release_notes	0s
	1h 26m 23s

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