feat(themes): Add fuzzy search for filtering and sorting themes in settings

[tom-ludwig]

Description

Added a basic fuzzy search feature to the themes settings page (#1760). This utilizes the existing algorithm and will help users find themes much faster.

Related Issues

• closes #1760

Checklist

• [x] I read and understood the contributing guide as well as the code of conduct
• [x] The issues this PR addresses are related to each other
• [x] My changes generate no new warnings
• [x] My code builds and runs on my machine
• [x] My changes are all related to the related issue above
• [x] I documented my code

Screenshots

[austincondiff]

I appreciate the PR, but is this something users want/need? We might do this in the Quick Actions overlay when we get to that point. ⇧⌘A, Type "Theme", press enter, Quick actions then displays a searchable list of all themes for you to choose from. To go back users can press something like Esc or Backspace similar to Raycast.

[tom-ludwig]

I completely agree that users would likely use the Quick Action overlay to achieve the same result. However, I believe that every list in an application, regardless of its content, should have a search field if possible. It doesn’t need to be visible at all times, but perhaps we could include a button that reveals a search field when needed.

[austincondiff]

Can you update that old screenshot with a new screen recording showcasing your changes?