This commit changes the code to use `XDataStream` instead of `QDataStream` for parsing the COD8 Wii file format. This aligns with the use of `XDataStream` in other parts of the FastFile library.
This commit changes the code to use `XDataStream` instead of `QDataStream` for parsing the COD8 Wii file format. This aligns with the use of `XDataStream` in other parts of the FastFile library.