Use Platformio to assist in managing system configurations

[hmaarrfk]

Hey Zack,

I've been experimenting with PlatformIO to manage system configurations.

It should allow you to:

• Easily change board configurations without touch the C source.
• Create a path to updating to the Teensy 4.0 without really "remembering" to target it on the Arduino interface all the time.

For example, the command:

platformio run -e sci_big_wing

would build sci_big_wing, and the command

platformio run -e sci_wing

would be the sci_wing array.

Hopefully we can work through a few of these PRs .

We would like to try and ensure our firmware stays in sync with yours.

Best,

Mark

[hmaarrfk]

FYI, i mostly use the platformio gui, but you know, this can help too.