PSF Engine

[Kermalis]

This adds the PSF engine as one of the supported engines by the program.

DONE:

• Most events work properly already
• Instruments work but without ADSR
• Figured out how to use microseconds for timing
• Looping

TODO:

• ADSR
• Portamento, pitch bend, vibrato, panpot, priority
• Decode sample on the fly instead
• Use proper refresh rate from psf file
• Read tags of each psf file to get the display label for the songs dropdown
• Time signatures
• Song position setting
• Fix recording to wav
• Get song, instrument, and samples positions in the buffer for each game (currently using Crash Bandicoot 2/3 hardcoded offsets)
• Translated strings
• A few events