Kind request: Shading Overview item support

[tnowak]

I'm using your fork of homebridge-loxone-ws (homebridge-loxone-ws-adv) in HOOBS to integrate Loxone with Alexa and I'm very satisfied with it (thanks for all contributors!). I miss support for two device types though and this is one of them:

• Central block for blinds (Shading Overview). Blind blocks are detected correctly but only for single windows, not for whole room.

I kindly request adding support for that item.