user defined files for sml energy meter (Zähler Typ eHZ-IW8E2A5L0EK2P) and gas meter (smarthome)
based on
https://forum.creationx.de/forum/index.php?thread/1095-d0-zähler-sml-auslesen-mit-tasmota/
and
https://forum.creationx.de/forum/index.php?thread/1673-gaszähler-counter-mit-tasmota-firmware/