Group worker commands into a namespace

[ehl-jf]

• The pull request is targeting the main branch.
• The code has been validated to compile successfully by running go vet ./....
• The code has been formatted properly using go fmt ./....
• All static analysis checks passed.
• All tests have passed. If this feature is not already covered by the tests, new tests have been added.
• All integration tests have passed locally as they cannot be automated yet.
• All changes are detailed at the description. if not already covered at JFrog Documentation, new documentation have been added.

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