ele: Change battery outline

ele: Move footprints from yaqwsx to battery

ele: battery - add missing KiCad footprint

ele: battery - add balancer connector

ele: battery - add voltage/state LED indicators Use this buttons: - https://www.tme.eu/cz/details/tactb-64k-f/mikrospinace-tact/ninigi/ - https://www.aliexpress.com/item/50PCS-LOT-SMD-4-4-1-5MM-7MM-4X4X1-5MM-7MM-5-2mm-x-5-2mm/32907185072.html

ele: battery - add battery pack in updated version Many improve from v0.1 (not commited): - improve width on route for higher current - fix bug with charge on charge/dock board and reroute it - add more text label

README: add English version and change Czech text - add English version - add license CC BY-SA 4.0 - add link to Arduino library - fix number of I2C connectors

README: improve Czech text

ele: MainBoard.sch - repair version of the second sheet (v1.1 -> v1.2)

ele: LegoConnectorX1A.brd - remove one additional text