Improved shortcut: add games in applist for Windows, question for start game at fullscreen & better unicode support for some Windows path funcs.

src/common/fs/fs_util.h

@@ -82,4 +82,24 @@ concept IsChar = std::same_as<T, char>;
  */
 [[nodiscard]] std::string PathToUTF8String(const std::filesystem::path& path);
 
-} // namespace Common::FS
+/**
+ * Fix filename (remove invalid characters)
+ *
+ * @param u8_string dirty encoded filename string
+ *
+ * @returns utf8_string santized filename string
+ *
+ */
+[[nodiscard]] std::u8string U8FilenameSantizer(const std::u8string_view u8filename);
+
+/**
+ * Fix filename (remove invalid characters)
+ *
+ * @param utf8_string dirty encoded filename string
+ *
+ * @returns utf8_string santized filename string
+ *
+ */
+[[nodiscard]] std::string UTF8FilenameSantizer(const std::string_view filename);
+
+} // namespace Common::FS