Add features to GUI (#757)

* controller image changes depending on the selected controller type

the new controller image assets are temporary until i get new ones

* Game list scans subdirs for games

* Key file existence check

* Only shows Program NCAs in Application list

* Change shown GUI columns without restarting

* Sort by column if you click on the column header

Columns are sorted as text so there are inaccuracies on some columns

* Fix sort on Time Played, Last Played and File Size columns

* Add ability to designate favourite games #1

TODO:
- Make fav games persistent
- Fix invisible check marks due to theme

* Add ability to designate favourite games #2

Also removed default theme

* Added a Windows specific build condition and a Linux bug fix

* bugfix

* Load metadata from JSONs

* Temp bug fix for MacOS

* lil clean up

* requested changes

* Misc fixes

* edited schema and config

* Show the TitleID of games on the title bar

* gui column config option have names

* Async loading of game list

* bugfix and cleanup

* thog's requested changes

* requested changes and cleanup

still need to fix the gtk seizure

* Fix issue where an ExeFS as a NSP didn't show up in the application list

* Minor fixes

* catch glib unhandled exceptions

* Make sure to do UI manipulation in the main thread

* Print path of invalid files

* Ac_k's requested changes

* Return of the dark theme

* move AboutInfo struct to another file

* sort usings

* changes

- gdkchan's requested changes that have been marked resolved
- made some structs internal as they aren't used outside of the GUI
- renamed Ryujinx.UI to Ryujinx.Ui to fit naming convention and folder structure
- fixed bug where controller type dropdown box is stretched

Ryujinx/Configuration.cs

@@ -7,8 +7,8 @@ using Ryujinx.HLE;
 using Ryujinx.HLE.HOS.SystemState;
 using Ryujinx.HLE.HOS.Services;
 using Ryujinx.HLE.Input;
-using Ryujinx.UI;
-using Ryujinx.UI.Input;
+using Ryujinx.Ui;
+using Ryujinx.Ui.Input;
 using System;
 using System.Collections.Generic;
 using System.IO;
@@ -124,7 +124,7 @@ namespace Ryujinx
         /// <summary>
         /// Used to toggle columns in the GUI
         /// </summary>
-        public List<bool> GuiColumns { get; set; }
+        public GuiColumns GuiColumns { get; set; }
 
         /// <summary>
         /// A list of directories containing games to be used to load games into the games list
@@ -154,7 +154,7 @@ namespace Ryujinx
         /// <summary>
         /// Controller control bindings
         /// </summary>
-        public UI.Input.NpadController JoystickControls { get; private set; }
+        public Ui.Input.NpadController JoystickControls { get; private set; }
 
         /// <summary>
         /// Loads a configuration file from disk