[C64] EasyFlash overhaul

[SaxxonPike]

• Implement the AM29F040B flash device as its own component
• Fix save data for games that use the standard EasyAPI driver
• Fix "Briley Witch Chronicles 2": the flash driver checks AutoSelect register 02 to see if the cartridge is write-protected
• Rom is stored as bytes instead of ints, saves a lot of memory
• EasyFlash now has proper hard reset and clock operations
• SaveRam deltas fixed
• Flash writes and erases take a realistic amount of cycles to complete and properly report progress- this process is not instantaneous in hardware

These changes will make prior save states and saveram incompatible if they use the EasyFlash format.

Check if completed:

• I have run any relevant test suites
• I, the committer, have read the licensing terms for contributors (last updated 2024-06-22) and am compliant

[SaxxonPike]

More notes to add:

• Memory domains have been added for EF RAM, and both Low/High flash ROM chips at the hardware level
• C64 Cartridges can now implement ISaveRam (we will want to explore how to handle disk+cartridge configurations in the future)