BF/BigFile support

[AngrySonics]

The archive explorer only has options for the DAT, CNT, IPK and PIE files.

Several games in the franchise (Rayman Raving Rabbids, Rayman Raving Rabbids 2, Rayman Raving Rabbids TV Party, Rabbids Go Home, the Rayman 4 prototype, etc) use BF files, which do not appear in that list whatsoever.

[RayCarrot]

I don't think there would be much gain from adding support for BF archives since in the retail games all of the files within them are binarized, meaning you don't have access to the individual asset files like the textures, sounds etc.