Design principles for `gp` cli

[loujaybee]

We could do with a set of design principles for gp CLI and/or any resultant clean-up to the API surface.

e.g. topics of:

• <subject> <verb>
• What lives top-level, etc.

Relates to:

• Move all ports commands under the gp CLI namespace #10449
• Internal conversation regarding gp info and gp url differences.

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs. Thank you for your contributions.

[david-bakin]

This issue is a good idea, should remain open until addressed, IMO - if gitpod agrees then mark never-stale?