OZW - Add .xml config

Hello,

I have a device MCO (C221) but OZW not know this device and manufacturer.

I try to find how add the config files :
https://gist.githubusercontent.com/adrianmo/88e9fd959f9a4cf0e0d01cb7787c518e/raw/06d4e80b7185b9cb50ee017e8da3fb118c371a17/mhc221.xml

but I don’t find how and where.

I find only 3 .xml
The zwcfg_0xc9939a54.xml it’s look an old .xml not for OZW.

/ $ find . -type f -name "*.xml"
./config/zwscene.xml
./config/options.xml
./config/zwcfg_0xc9939a54.xml

Somebody can help me ?