research esp-based implementation

[DennisOSRM]

• What's necessary to have a barebones implementation that runs on ESP32 chips
• Break down implementation plan into milestones

[DennisOSRM]

This seems very much doable

progress:

• dev environment set up with a ESP32-C3-M1
• basic architecture using two threads and a channel to cross-communicate

milestones for a map implementation:

• split code into library
• implement output channel for display
• connect channels

[DennisOSRM]

[DennisOSRM]

Somewhat expectedly the code compiles fine for the esp32-c3 platform after sorting out dependencies