feat(policy): add unsafe service protos and unsafe service proto Go gencode #3596

Job	Run time
image build	1m 48s
go (examples)	1m 20s
integration tests (standard)	4m 56s
go (sdk)	2m 15s
Validate PR title	4s
go (service)	3m 36s
go (lib/ocrypto)	1m 18s
Protocol Buffer Lint and Gencode Up-to-date check	6s
go (lib/fixtures)	1m 10s
license check	59s
go (lib/flattening)	1m 29s
ci	1s
	19m 2s

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