Epic: Restructure/refactor submariner-operator repo

[Jaanki]

Epic Description

This will ensure that submariner-operator repo structure follows go standards and is optimised.

Acceptance Criteria

submariner-operator code is as much optimised and modular as possible.

Definition of Done (Checklist)

• Code complete
• [ ] Relevant metrics added
• The acceptance criteria met
• Unit/e2e test added & pass
• CI jobs pass
• [ ] Deployed using cloud-prepare+subctl
• [ ] Deployed using ACM/OCM addon
• [ ] Deploy using Helm
• [ ] Deployed on supported platforms (for e.g kind, OCP on AWS, OCP on GCP)
• Run subctl verify, diagnose and gather
• [ ] Uninstall
• [ ] Troubleshooting (gather/diagnose) added
• [ ] Documentation added
• [ ] Release notes added

Work Items

• Make subctl a library Depends on subctl should be refactored to a library, and make subctl the CLI of that library submariner-operator#1329

[github-actions]

🎉 Great news! Looks like all the dependencies have been resolved:

• subctl should be refactored to a library, and make subctl the CLI of that library submariner-operator#1329

💡 To add or remove a dependency please update this issue/PR description.

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