Rich CLI Overhaul

[tandy-1000]

Description

Snejus overhauled Beets' UI, this PR attempts to mainline these changes.
#1593 (comment)

To Do

• Improve the UI's usage of vertical space on import, e.g split things into various tables
• Add an option to only display the differing fields on imprort

[tandy-1000]

@sampsyo could you allow CI to run so I can test this?

[snejus]

@tandy-1000 Could you by any chance share some screenshots how it looks like now?

[tandy-1000]

Hey @snejus unfortunately I didn't get a chance to continue with this, I can have a look again this weekend potentially.
It would help to pair on this if that would work for you?

[stale]

Is this still relevant? If so, what is blocking it? Is there anything you can do to help move it forward?

This pull request 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.

[snejus]

@tandy-1000 I'm so sorry, I haven't seen your message until now. I'd be very interested to see what you have done here

[stale]

Is this still relevant? If so, what is blocking it? Is there anything you can do to help move it forward?

This pull request 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.