Now with the help of AI ( because I'm not a developer) and with the great work of Daniel Lando https://github.com/zwave-js/zwave-js-ui, i managed to create a plugin for Loxberry with Z-wave.
I tested with using Aeotec Z-stick Gen5 & various zwave devices from fibaro and aeotec.. Working well. Please I'm not a developer and I cannot do the support for it. If anyone is interested to create a wiki page at loxwiki and support or develop further the plugin is welcome.
MQTT works well and miniserver receives data as usual.
Enjoy !