Firmware is now not using the ledcsetup function but is directly setting up the ledc hardware.
This enables the LEDC output to be inverted as needed for the OMOTE hardware.
Refactored code base:
* Code moved to additional modules each with its individual responsibilities
* Display module is responsible for input/output on the LCD screen
* wifihandler is responsible for handling WIFI connection
* Battey module is responsilbe to monitor the battery
* Data exchange should only be done via public API
Added WIFI configuration menu
* WIFI no longer specified via defines
* In settings tab, wifi submenu added to enter credentials
* wifi credentials are stored in flash after a successful connection
