feat: Implement an UI for commands

[Rosy-iso]

Description

Adds an interface that replicates the behavior of the following commands:

• /myroomavatar
• /myroomnick
• /color
• /scolor
• /pronoun
• /spronoun
• /font
• /sfont

The original commands will still remain and be usable however.
(In fact the interface calls the commands in the background, so the commands should not be changed.)

Type of change

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• This change requires a documentation update

Checklist:

• My code follows the style guidelines of this project
• I have performed a self-review of my own code
• I have commented my code, particularly in hard-to-understand areas
• I have made corresponding changes to the documentation
• My changes generate no new warnings

[7w1]

Only issue I see is that there's no feedback for if the user has permission to change their pronouns/color/font in a space. Could disable those fields similar based on whether or not the user has permission (look at the code for the toggles and disable if the toggles are disabled, or similar).

[Rosy-iso]

oh right, i forgot those could be disabled
I'll make them disable when the user doesn't have permission

[Rosy-iso]

should be all good now