* feat(annotations): Adds annotation flag for service create and update
- Adds specified annotations to service object meta and revision template meta
- Adds --annotation / -a flag to service create and update options
- User can specify '-' at the end of the annotation key to remove an annotation
- Adds unit and e2e tests
- Updates docs and changelog accordingly
* Adds example for service create with annotation
* Adds mock unit tests for service update with annotations
* Removes the short hand -a for annotation flag