Service Account ID public API and better validation

0.0.3

feat(sa-id-utils): public function to get service account id for a cl…

Fix issues with Google naming and id requirements

• ensure service account name meets Google requirements

Fix issue with service account keys api

• Better handle case where service account has 0 keys

Initial release

Merge pull request #2 from uc-cdis/feat/initial

Feat/initial