Implement Counter Queue and Partial Host Conditional Rendering (#1167)

* Implementation of query queue and host conditional rendering

* Resolve some comments.

* Use overloads instead of passing object.

* Wake the consumer threads when incrementing syncpoints.

Also, do a busy loop when awaiting the counter for a blocking flush, rather than potentially sleeping the thread.

* Ensure there's a command between begin and end query.

Ryujinx.Graphics.GAL/ICounterEvent.cs

@@ -0,0 +1,11 @@
+using System;
+
+namespace Ryujinx.Graphics.GAL
+{
+    public interface ICounterEvent : IDisposable
+    {
+        bool Invalid { get; set; }
+
+        void Flush();
+    }
+}