citra_qt, core: game list "Open XXX Location" improvements

src/core/file_sys/archive_extsavedata.cpp

@@ -176,6 +176,13 @@ std::string GetExtDataContainerPath(const std::string& mount_point, bool shared)
     return fmt::format("{}Nintendo 3DS/{}/{}/extdata/", mount_point, SYSTEM_ID, SDCARD_ID);
 }
 
+std::string GetExtDataPathFromId(const std::string& mount_point, u64 extdata_id) {
+    u32 high = static_cast<u32>(extdata_id >> 32);
+    u32 low = static_cast<u32>(extdata_id & 0xFFFFFFFF);
+
+    return fmt::format("{}{:08x}/{:08x}/", GetExtDataContainerPath(mount_point, false), high, low);
+}
+
 Path ConstructExtDataBinaryPath(u32 media_type, u32 high, u32 low) {
     ExtSaveDataArchivePath path;
     path.media_type = media_type;