Allow SNorm buffer texture formats on Vulkan (#3957)

* Allow SNorm buffer texture formats on Vulkan

* Shader cache version bump

Ryujinx.Graphics.Shader/IGpuAccessor.cs

@@ -285,6 +285,15 @@ namespace Ryujinx.Graphics.Shader
             return true;
         }
 
+        /// <summary>
+        /// Queries host GPU support for signed normalized buffer texture formats.
+        /// </summary>
+        /// <returns>True if the GPU and driver supports the formats, false otherwise</returns>
+        bool QueryHostSupportsSnormBufferTextureFormat()
+        {
+            return true;
+        }
+
         /// <summary>
         /// Queries host GPU texture shadow LOD support.
         /// </summary>