Summary of the new feature/enhancement

I often find myself doing just small adjustments to a layout, i.e. changing the ratio between two zones. Because #1193 is not implemented yet, this can be achieved right now by using a custom grid layout and editing it whenever I need to make an adjustment along with the "windows assigned to a zone will match new size/position" option. However, if I want to edit the layout I have to open the "choose layout" window, click the "Edit selected layout" button and (most of the time) move the "Custom layout creator" window out of the way before I can actually make the adjustment. After that I also have to click on an apply button twice. Having a hotkey to instantly open the "Edit selected layout" screen would make this process much faster.

From a user's perspective this could look like this:

1. Configure a hotkey in the PowerToys settings window
2. Select a layout and position windows within it
3. Whenever a quick adjustment is required, hit the configured hotkey
4. In the editor, make the layout adjustment
5. Hit the escape/enter key to apply the changes and close the editor
6. The adjustment is applied to the windows in the layout