Gladys on Unraid

For information, I resumed work this afternoon on Unraid/Synology compatibility.

I am working on this PR for those interested:

I started a VM and I am doing my tests inside it.

This PR modifies the Zigbee2mqtt integration and the MQTT integration at the same time, with the aim of being able to use a custom volume on the host side :slight_smile:

I will keep you informed when I have an image to test.