Implement soft float64 conversion on shaders when host has no support (#5159)

* Implement soft float64 conversion on shaders when host has no support

* Shader cache version bump

* Fix rebase error

src/Ryujinx.Graphics.Shader/Translation/HelperFunctionName.cs

@@ -1,10 +1,9 @@
-using Ryujinx.Graphics.Shader.IntermediateRepresentation;
-using System.Collections.Generic;
-
 namespace Ryujinx.Graphics.Shader.Translation
 {
     enum HelperFunctionName
     {
+        ConvertDoubleToFloat,
+        ConvertFloatToDouble,
         TexelFetchScale,
         TextureSizeUnscale
     }