[Feature] Support Full No-Intro Filename Structure (including BIOS prefix)

[DDriggs00]

Is your feature request related to a problem? Please describe.
The no-intro formatting guidelines (the standard for rom archiving) suggest storing the bios files in the same directory as roms, with a [BIOS] prefix. Currently, these files are scanned as roms.

Describe the solution you'd like
If a file in a rom directory is prefixed by [BIOS] , treat it as a Bios instead of a rom. This would not result in much extra scan overhead, but prevent improperly scanning the bios as a rom in those who's collections follow the no-intro standards.

[gantoine]

Would you mind if I broadened the scope of this ticket to support the entire filename structure: [BIOS flag] Title (Region) (Languages) (Version) (Devstatus) (Additional) (Special) (License) [Status]?

[DDriggs00]

Go ahead, supporting the full no-intro file naming structure is definitely a good idea for a rom manager, especially since redump uses it as well.