Add inbuilt Opengl renderer to window (#922)

* add gl rendering widget

* embed renderer into main window

* add input

* fix mouse input

* fix mouse coords

* refresh game list after closing game, remove profiler method

* rebase, hide game list progress bar while game is running

* Some bug fixes

Changelog:

- Reapply some changes that got lost while rebasing from #904
- Make sure to guarantee exclusivity on the GL context (fixing multiple
possible race conditions on Windows)
- Avoid making GLRenderer disposed multiple time

* add fullscreen,  enable input on focus, disable aplha

* addressed comments

* Disable transparency in the window

* fix fullscreen state, fix focus, addressed comments

* nit

* addressed nit

Co-authored-by: Thog <thog@protonmail.com>

Ryujinx/Ui/ScopedGlContext.cs

@@ -0,0 +1,35 @@
+using OpenTK.Graphics;
+using OpenTK.Platform;
+using System;
+using System.Threading;
+
+namespace Ryujinx.Ui
+{
+    class ScopedGlContext : IDisposable
+    {
+        private IGraphicsContext _graphicsContext;
+
+        private static readonly object _lock = new object();
+
+        public ScopedGlContext(IWindowInfo windowInfo, IGraphicsContext graphicsContext)
+        {
+            _graphicsContext = graphicsContext;
+
+            Monitor.Enter(_lock);
+
+            MakeCurrent(windowInfo);
+        }
+
+        private void MakeCurrent(IWindowInfo windowInfo)
+        {
+            _graphicsContext.MakeCurrent(windowInfo);
+        }
+
+        public void Dispose()
+        {
+            MakeCurrent(null);
+
+            Monitor.Exit(_lock);
+        }
+    }
+}