Minor improvements to the CLI

[vtnate]

Any background context you want to provide?

I found a bug in uo-cli when it was calling gmt-cli, which inspired me to look at gmt-cli. Found there were a few inconsistencies and missing documentation, so I cleaned that up. Then needed to update the tests because of it.

What does this PR accomplish?

• Make a few Click arguments options instead
  • This is consistent with the rest of our CLI, and properly categorizes required and optional arguments in the help text
• Add help text for new & existing cli options
• Update test call due to these changes

How should this be manually tested?

CI is sufficient

What are the relevant tickets?

This PR in the UO-CLI fixes the wrapper to our cli, and inspired this investigation.

[nllong]

sweet!