yuzu: Add desktop shortcut support for Windows

Allows creating desktop shortcuts with icons for yuzu games.

Co-Authored-By: Jeroen van Schijndel <13182141+roenyroeny@users.noreply.github.com>

src/common/fs/path_util.h

@@ -24,6 +24,7 @@ enum class YuzuPath {
     SDMCDir,        // Where the emulated SDMC is stored.
     ShaderDir,      // Where shaders are stored.
     TASDir,         // Where TAS scripts are stored.
+    IconsDir,       // Where Icons for Windows shortcuts are stored.
 };
 
 /**