Feature Parity with C Mega TODO

[jr1221]

• vl6180x driver, first sync then async
• Add a usart print in different threads
• hook up adc and create C-matching yet compile time checking way of implementing float to int.

General devops

• Investigate defmt capabilities and cargo embed for gdb-like server
• Fully document standards, practices, etc.
• Prepare embassy versioning standards
• Add github actions and cross platform guides
• Add deployment troubleshooting and more