[WIP] Bacon Flasher for my carts

[ChisBread]

Hi! This is a WIP PR, please do not merge.

The Bacon Flasher uses a CPLD to implement the SPI protocol and uses CH347T to convert to USB. I will open-source it after I'm done.

Current progress: AGB: Support flashcarts with write buffer such as S29GL, JS28F, etc., support backup and restore of SRAM/Flash. Support RTC DMG: -

Bacon Flasher

Write ROM (520KB/s)

Backup ROM (750KB/s)