Some improvements for nvnflinger (#555)

* Initial fixes for last release of libnx

For now, the framebuffer aren't okay but it will not crash/

* Improve code reaadability in NvFlinger parsing

* Make surfaces access more userfriendly

* Add ColorFormat

* Fix code style in ColorFormat.cs

* Add multiple framebuffer support in nvnflinger

This fix libnx console rendering

* Move ReadStruct/WriteStruct to Ryujinx.Common

* fix the last nit

* Fix inverted color for R5G6B5

Also add some other format that libnx might uses.

* Remove hardcoded BlockHeight in nvflinger

Ryujinx.HLE/HOS/Services/Vi/IApplicationDisplayService.cs

@@ -52,7 +52,7 @@ namespace Ryujinx.HLE.HOS.Services.Vi
 
         public long GetSystemDisplayService(ServiceCtx context)
         {
-            MakeObject(context, new ISystemDisplayService());
+            MakeObject(context, new ISystemDisplayService(this));
 
             return 0;
         }