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/_schema.json

@@ -484,17 +484,28 @@
     },
     "game_dirs": {
       "$id": "#/properties/game_dirs",
-      "type": "string list",
+      "type": "array",
       "title": "List of Game Directories",
       "description": "A list of directories containing games to be used to load games into the games list",
       "default": []
     },
     "gui_columns": {
       "$id": "#/properties/gui_columns",
-      "type": "bool list",
+      "type": "array",
       "title": "Used to toggle columns in the GUI",
       "description": "Used to toggle columns in the GUI",
-      "default": [ true, true, true, true, true, true, true, true, true ]
+      "default": {
+        "fav_column": true,
+        "icon_column": true,
+        "app_column": true,
+        "dev_column": true,
+        "version_column": true,
+        "time_played_column": true,
+        "last_played_column": true,
+        "file_ext_column": true,
+        "file_size_column": true,
+        "path_column": true
+      }
     },
     "enable_custom_theme": {
       "$id": "#/properties/enable_custom_theme",