Add a separate device memory manager (#6153)

* Add a separate device memory manager

* Still need this

* Device writes are always tracked

* Device writes are always tracked (2)

* Rename more instances of gmm to mm

src/Ryujinx.Graphics.Nvdec/ResourceManager.cs

@@ -1,16 +1,16 @@
-using Ryujinx.Graphics.Gpu.Memory;
+using Ryujinx.Graphics.Device;
 using Ryujinx.Graphics.Nvdec.Image;
 
 namespace Ryujinx.Graphics.Nvdec
 {
     readonly struct ResourceManager
     {
-        public MemoryManager Gmm { get; }
+        public DeviceMemoryManager MemoryManager { get; }
         public SurfaceCache Cache { get; }
 
-        public ResourceManager(MemoryManager gmm, SurfaceCache cache)
+        public ResourceManager(DeviceMemoryManager mm, SurfaceCache cache)
         {
-            Gmm = gmm;
+            MemoryManager = mm;
             Cache = cache;
         }
     }