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.HLE/Loaders/Npdm/Npdm.cs

@@ -7,7 +7,7 @@ namespace Ryujinx.HLE.Loaders.Npdm
     // https://github.com/SciresM/hactool/blob/master/npdm.c
     // https://github.com/SciresM/hactool/blob/master/npdm.h
     // http://switchbrew.org/index.php?title=NPDM
-    class Npdm
+    public class Npdm
     {
         private const int MetaMagic = 'M' << 0 | 'E' << 8 | 'T' << 16 | 'A' << 24;