Powerpipe commands cleanup

[misraved]

Describe the bug powerpipe --help command yields the following output:

• [x] control command appears twice
• [x] Are we going to have the query command as well? Or is it a typo?
• [ ] The description needs to be aligned with Steampipe commands. Commands like variable, dashboard etc.
• [ ] The CLI description is missing. It just says Powerpipe. at the moment.

Powerpipe version (powerpipe -v) v0.1.0-alpha.202402151234

To reproduce Type powerpipe --help

Expected behavior Return the correct list of commands with appropriate descriptions.

Additional context Add any other context about the problem here.

[kaidaguerre]

moved CLI description to https://github.com/turbot/powerpipe/issues/187