Shader translation delay hack (#469)

A workaround to avoid a freeze when translating shaders with the Metal
backend, that would happen after changing version or going from Vulkan
to Metal. 

Adds a delay in milliseconds, configurable in the UI behind the Dirty Hacks mechanism.

---------

Co-authored-by: Evan Husted <greem@greemdev.net>

src/Ryujinx.Graphics.Gpu/Shader/DiskCache/ParallelDiskCacheLoader.cs

@@ -1,3 +1,4 @@
+using Ryujinx.Common.Configuration;
 using Ryujinx.Common.Logging;
 using Ryujinx.Graphics.GAL;
 using Ryujinx.Graphics.Shader;
@@ -366,6 +367,9 @@ namespace Ryujinx.Graphics.Gpu.Shader.DiskCache
         {
             try
             {
+                if (_context.DirtyHacks.IsEnabled(DirtyHacks.ShaderCompilationThreadSleep))
+                    Thread.Sleep(_context.DirtyHacks[DirtyHacks.ShaderCompilationThreadSleep]);
+                
                 AsyncProgramTranslation asyncTranslation = new(guestShaders, specState, programIndex, isCompute);
                 _asyncTranslationQueue.Add(asyncTranslation, _cancellationToken);
             }