UI: Add progress bar for re-packaging shaders (#4805)

* feat: introduce new shader loading state for progress tracking when writing shaders to disk

* fix: move translation to bottom of locale file

* fix: change back to foreach and add requested spacing between lines

* style: fix formatting

Co-authored-by: gdkchan <gab.dark.100@gmail.com>

---------

Co-authored-by: gdkchan <gab.dark.100@gmail.com>

src/Ryujinx.Graphics.Gpu/Shader/ShaderCacheState.cs

@@ -7,6 +7,8 @@ namespace Ryujinx.Graphics.Gpu.Shader
         Start,
         /// <summary>Shader cache is loading</summary>
         Loading,
+        /// <summary>Shader cache is written to disk</summary>
+        Packaging,
         /// <summary>Shader cache finished loading</summary>
         Loaded
     }