feat(policy): add unsafe service protos and unsafe service proto Go gencode #3598

Job	Run time
integration tests (standard)	3m 6s
image build	1m 55s
go (examples)	1m 18s
go (sdk)	2m 22s
Validate PR title	2s
go (service)	3m 44s
go (lib/ocrypto)	1m 5s
Protocol Buffer Lint and Gencode Up-to-date check	25s
license check	56s
go (lib/fixtures)	1m 8s
go (lib/flattening)	1m 2s
ci	1s
	17m 4s

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