keymaps: adjust keybindings-widget

[vince-fugnitto]

What it does

Fixes #7530

The following commit includes the changes:

• add the category as part of the label for commands which have categories included.
• adjust the sorting of commands (commands with labels should be higher than those without (only id)).

How to test

1. open the keybindings-widget
2. verify that commands with category correctly display their categories.
3. verify that the sorting is correct:
   • commands with keybindings should be placed highest
     • commands with labels should be higher than those without (only ids), and should be in alphabetical order
   • commands without keybindings should be placed lower and in alphabetical order

Review checklist

• as an author, I have thoroughly tested my changes and carefully followed the review guidelines

Reminder for reviewers

• as a reviewer, I agree to behave in accordance with the review guidelines

Signed-off-by: vince-fugnitto vincent.fugnitto@ericsson.com

[Anasshahidd21]

Tested these changes against master, and it looks a lot more uniform now. The labels are sorted as desired.

[elaihau]

I tested in Gitpod. The differences I can tell are that,

• vscode uses a long dash as a placeholder for empty cells in the When column while Theia doesn't have it.
• Key names are capitalized in vscode, and not in Theia

In my opinion neither the placehoder or the capitalization is important.