Clean up CLI

[jonatanolofsson]

The bellows CLI depends on zigbee and handles database stuff that belongs to zigpy

[Hedda]

Could this now perhaps be better if requested as a feature for zigpy-cli instead? -> https://github.com/zigpy/zigpy-cli

Or move to the main zigpy library? -> https://github.com/zigpy/zigpy

Anyway, the bellows CLI is not maintained any longer, it has been replaced by the combination of the main zigpy libary (for ZCL + ZDO) and zigpy-cli:

https://github.com/zigpy/zigpy

https://github.com/zigpy/zigpy-cli

So at least be aware that many tools from zigpy radio libraries are deprecated as have instead been moved to zigpy-cli instead:

https://github.com/zigpy/zigpy-cli