v2.0.0

breaking changes: starting from version 2.0, entity-ids from auto-created sensors via mqtt auto discovery will be prefixed with seplos_bms_pack_x instead of seplos_pack_x.

add home assistant auto discovery sensor config creation logic, improved lovelace code, added some initial code for intra-pack communication decoding, add handler for stopped containers, add last will, catch port-disconnections and disapperaings, add availability, unified logs, added check if serial connection is open to exit-handler