* port: ID_SEL2_PIN is optional
Dual version is out of mcu pins and implement only one sel pin.
* board: f1_dial: add dual channel board
* GH actions: add f1_dual build to actions
* f1_dual: use uart driver, not serial
* f1_dual: setup correct remaps
* f1_dual: DEBUG: enable uart debug (disable TS)
* board: f1_dual: add way to measure battery through Heater-
* fix dual board
Co-authored-by: Andrey Gusakov <dron0gus@gmail.com>