✨ Preview custom window sizes directly on keybinds list

[greg1075]

Feature Request Description

Users should be able to see the various custom window sizes at a glance directly on the Keybindings>Keybinds menu page without having to drill down to each individual custom keybind's settings page, similar to what Rectangle Pro does.

Screenshots

Additional Context

No response

Final Checks

• My issue is written in English
• My issue title is descriptive
• This is a single feature request (multiple feature requests should be reported individually)
• I can help with the improvement or development of this feature (tick if you can help)