Support multiple RP2040 boards

[zjwhitehead]

Store Hardware Config Version in EEPROM

This update adds the ability to store the hardware configuration version in EEPROM. Previously, firmware versions were determined at build time. With the new RP2040 module-based PCB, relying on the main chip to determine pinouts is no longer feasible.

We now support multiple configurations using the same MCU. The system reads pinouts during boot, setting up peripherals like the screen and barometer based on the loaded configuration. Supported hardware revisions are M0, V1, and Module. Differences in the RP2040 hardware include an RGB LED that indicates boot status and USB connection.

For users with the original RP2040 controller, the hardware revision will be detected and stored in EEPROM during the upgrade.

Upgrade Process:

• Visit the config tool website.
• Flash the .uf2 file.
• The .uf2 file will only flash if compatible with your hardware, which can be verified on the config tool page.
  Testing and Compatibility:

Notes:

• Thoroughly tested on M0, V1, and Module revisions.
• No significant changes in external functionality; the module improves manufacturing and system reliability.
• Feedback is welcome.