Add option to specify in usage alias command name

[attiasas]

• All tests passed. If this feature is not already covered by the tests, I added new tests.
• All static analysis checks passed.
• This pull request is on the master branch.
• I used gofmt for formatting the code before submitting the pull request.

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Adds an option to specify a different command name in usage for plugins.
This will be used by the help commands for build tools that are not parsed and used like other commands (docker scan)

[github-actions]

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🐸 JFrog Frogbot