add config flow

[doudz]

[Jsl-1]

Hi, Maybe it can be an opportunity to add support for multiple zigate without breaking change ? the zigate with config imported from yaml will keep existing unique ids zigate.XXXXX, light.zigate_XXX_X ... The other can (created with config flows) zigate_1.XXX or any configurable base name.

[doudz]

Because you use more than one zigate ? Never think about that

[Jsl-1]

Not for know, but it can be some reasons :

• Network grow too much
• Some device works only on a specific channel (Livolo ?)
• Some device needs a specific firmware version (Zigate ZHA_1.2)

[Jsl-1]

Another use : second zigate with wifi for a local out of range.