Ava UI: Input Menu Refactor (#4998)

* So much boilerplate

* Slow and steady

* Restructure + Ack suggestions

* Restructure + Ack suggestions

* Restructure

* Clean

* Propogate those fields i forgot about

* It builds

* Progress

* Almost there

* Fix stupid mistake

* Fix more stupid mistakes

* Actually fix fuck ups

* Start localising

* r/therestofthefuckingowl

* Localise ButtonKeyAssigner

* Are you feeling it now mr krabs

* We’re done at last

* Crimes against code

* Try me in the Hague

* Please be quiet

* Crimes are here to stay

* Dispose stuff

* Cleanup a couple things

* Visual fixes and improvements

One weird bug

* Fix rebase errors

* Fixes

* Ack Suggestions

Remaining ack suggestions

Update src/Ryujinx.Ava/UI/Models/Input/ControllerInputConfig.cs

Co-authored-by: Ac_K <Acoustik666@gmail.com>

Update src/Ryujinx.Ava/UI/Models/Input/ControllerInputConfig.cs

Co-authored-by: Ac_K <Acoustik666@gmail.com>

* Formatting and error

More Ava 11-ness

Whoops

* Code style fixes

* Style fixes

* Analyzer fix

* Remove all ReflectionBindings

* Remove ambigious object

* Remove redundant property

* Old man yells at formatter

* r e a d o n l y

* Fix profiles

* Use new Sliders

---------

Co-authored-by: Ac_K <Acoustik666@gmail.com>

src/Ryujinx.Input/Assigner/IButtonAssigner.cs

@@ -31,6 +31,6 @@ namespace Ryujinx.Input.Assigner
         /// Get the pressed button that was read in <see cref="ReadInput"/> by the button assigner.
         /// </summary>
         /// <returns>The pressed button that was read</returns>
-        string GetPressedButton();
+        ButtonValue? GetPressedButton();
     }
 }