ele: Extend the plug template in battery

ele: Reroute board due to new LiOnCharger module - fix labels BAT+/- for charger pins

ele: Update footprints on battery

ele: update LiOnCharger - now support longer + USBC modules

ele: Do not remove intermediate files in Makefile

ele: Add makefile to generate gerbers automatically

ele: Update battery panels

ele: Fix symbol and footprint libraries

docs: add images of boards and improve documentation in README.md

ele: battery - improve battery indicator - rename LEDs and diodes - add missing routes on switch