feat: add track display

[wcampbell0x2a]

Add display for track (previous aircraft positions) as white dots on the Map display.

Add some clippy lints

Closes: https://github.com/rsadsb/adsb_deku/issues/24

[wcampbell0x2a]

Pretty quiet night, but this looks pretty great with little code!

[wcampbell0x2a]

• [ ] Add key bindings to disable track, icao, heading at runtime.