Add option to change controller LED color (#572)

This allows the user to change the controller LED while using Ryujinx.
Useful for PS4 and PS5 controllers as an example.

You can also use a spectrum-cycling Rainbow color option, or turn the LED off for DualSense controllers.

---------

Co-authored-by: Evan Husted <greem@greemdev.net>

src/Ryujinx/Utilities/Configuration/ConfigurationState.Migration.cs

@@ -1,3 +1,4 @@
+using Avalonia.Media;
 using Gommon;
 using Ryujinx.Ava.Utilities.Configuration.System;
 using Ryujinx.Ava.Utilities.Configuration.UI;
@@ -421,7 +422,9 @@ namespace Ryujinx.Ava.Utilities.Configuration
                         config.Led = new LedConfigController
                         {
                             EnableLed = false,
-                            LedColor = 328189
+                            TurnOffLed = false,
+                            UseRainbow = false,
+                            LedColor = new Color(255, 5, 1, 253).ToUInt32()
                         };
                     }
                 })