Initial design on packaging of devfile registry for deployment

[elsony]

User Story

As a devfile admin, I want to create a package of the devfile registry that can be hosted for other devfile users to access.

Acceptance Criteria

• It should define how the packaging of the devfile registry looks like
• It should define the mechanism to deploy in different environment, e.g. cluster vs standalone registry
  • Ending up no difference between the two since both of them uses the operator as the deploy mechanism

Links

• Related issue:
  This item is part of the epic OCI-based registry support #82

[johnmcollier]

Design doc for the packaging of the devfile registry https://docs.google.com/document/d/1trb4qfqY9fRKzJKhUALMIbiPcSB1MtZOPnaKum08agU/edit?usp=sharing

OCI registry deploy design and implementation will be covered by #190.