Metal: Buffers Take 2 (#21)

* Basic BufferManager

* Start Scoped Command Buffers

* Fences stuff

* Remember to cleanup sync manager

* Auto, Command Buffer Dependants

* Cleanup

* Cleanup + Fix Texture->Buffer Copies

* Slow buffer upload

* Cleanup + Rework TextureBuffer

* Don’t get unsafe

* Cleanup

* Goddamn it

* Staging Buffer + Interrupt Action + Flush

src/Ryujinx.Graphics.Metal/Constants.cs

@@ -16,5 +16,7 @@ namespace Ryujinx.Graphics.Metal
         public const int MaxVertexLayouts = 31;
         public const int MaxTextures = 31;
         public const int MaxSamplers = 16;
+
+        public const int MinResourceAlignment = 16;
     }
 }