Improve multi-controller support in HID and Controller Applet (#1453)

* Initial commit

Enable proper LED patterns
Toggle Hotkeys only on focus
Ignore Handheld on Docked mode
Remove PrimaryController
Validate NpadIdType
Rewrite NpadDevices to process config in update loop
Cleanup

* Notify in log periodically when no matched controllers

* Remove duplicate StructArrayHelpers in favor of Common.Memory

Fix struct padding CS0169 warns in Touchscreen

* Remove GTK markup from Controller Applet

Use IList instead of List
Explicit list capacity in 1ms loop
Fix formatting

* Restrict ControllerWindow to show valid controller types

Add selected player name to ControllerWindow title

* ControllerWindow: Fix controller type initial value

NpadDevices: Simplify default battery charge

* Address AcK's comments

Use explicit types and fix formatting

* Remove HashSet for SupportedPlayers

Fixes potential exceptions due to race

* Fix ControllerSupportArg struct packing

Also comes with two revisions of struct for 4/8 players max.

Ryujinx.HLE/IHostUiHandler.cs

@@ -10,5 +10,17 @@ namespace Ryujinx.HLE
         /// <param name="userText">Text that the user entered. Set to `null` on internal errors</param>
         /// <returns>True when OK is pressed, False otherwise. Also returns True on internal errors</returns>
         bool DisplayInputDialog(SoftwareKeyboardUiArgs args, out string userText);
+
+        /// <summary>
+        /// Displays a Message Dialog box to the user and blocks until it is closed.
+        /// </summary>
+        /// <returns>True when OK is pressed, False otherwise.</returns>
+        bool DisplayMessageDialog(string title, string message);
+
+        /// <summary>
+        /// Displays a Message Dialog box specific to Controller Applet and blocks until it is closed.
+        /// </summary>
+        /// <returns>True when OK is pressed, False otherwise.</returns>
+        bool DisplayMessageDialog(ControllerAppletUiArgs args);
     }
 }