Fix TXQ for 3D textures. (#2613)

* Fix TXQ for 3D textures.

Assumes the texture is 3D if the component mask contains Z.

This fixes a bug in UE4 games where parts of the map had garbage pointers to lighting voxels, as the lookup 3D texture was not being initialized. Most notable game is THPS1+2.

May need another PR to keep image store data alive and properly flush it in order using the AutoDeleteCache.

* Get sampler type for TextureSize from bound textures.

Ryujinx.Graphics.Shader/IGpuAccessor.cs

@@ -1,4 +1,6 @@
-namespace Ryujinx.Graphics.Shader
+using Ryujinx.Graphics.Shader.Decoders;
+
+namespace Ryujinx.Graphics.Shader
 {
     public interface IGpuAccessor
     {
@@ -79,9 +81,9 @@
             return true;
         }
 
-        bool QueryIsTextureBuffer(int handle, int cbufSlot = -1)
+        SamplerType QuerySamplerType(int handle, int cbufSlot = -1)
         {
-            return false;
+            return SamplerType.Texture2D;
         }
 
         bool QueryIsTextureRectangle(int handle, int cbufSlot = -1)