Feature request: Add devices group support

[Kxtreme]

I noticed my lights groups didn't synchronize with HA and I need to create automation acting on those light groups.
I searched a little bit on the code and I assume the API used.
I noticed on my devices file that there are some devices with devGroups, but this has no more info about them so I assume this isn't being stored.
according to https://coolkit-technologies.github.io/eWeLink-API/#/en/APIReferenceV2
the request GET@/v2/device/thing Get all the devices and groups under the specified home ID
and the request POST@/v2/device/thing/status Set the status of a device or a group, such as the on/off of a switch.

so the existing request should already have the information, I have no experience working with HA.