Feature Request: Custom on-screen input layouts via XML file - including keyboard keys

Hello,

Here's a feature that I think would be very helpful:

• Allowing to import / point to an .XML file describing the layout of the on-screen inputs, in a specific format. For instance I would edit it on PC then download it to my Android device. I think this would simplify the configuration / portability / sharing.
• Allowing in such layouts to create on screen keyboard keys, for instance F12 etc. This is the main reason to my request: I need having fast access to F12 and such.
• Adding even mouse clicks - though I don't need that.
• You could use this layout system for gamepad inputs too, but I personally don't need that as I use a physical gamepad.
• Preferably, this system would not use .PNG images, just font based text, to simplify the creation process and portability, as everything would be in a single .XML file, that you could switch too for multiple layouts.

Can you please consider this feature?

Thanks!

The issue names no files, tests, or entry points. It requests a new XML-based system for on-screen inputs, keyboard keys, mouse clicks, and possibly gamepad controls, so the scope and format need agreement before implementation.