Remora - Rpi Software Stepping Using External Microcontroller via SPI

depends which version but yeah. i did most of my work on octopus and nucleo f446 and assumed the encoder pins would be the same. when i went to check the pcbs i made is when i found out. software encoder will work though

rev 0.35
- fixed hardware encoder pins
- removed stm32f1 support to better support  f411 (for now at least)
- shuffled around the pins a bit
- added support for 2209 (because its 2024 , so i should get with the times, i guess)
- added sd card support , otherwise 2209 support would be a pain

if 2209 and sd card dont work, or become a pain, i will just revert back to the old simple design