Zigbe Back Up and Restore

Migration is now available from home assistant, so within home issistant. So you can now back up your zigb network for your device and then migrate that over to another home assistant instance. It is going to be particularly useful if you have something like a home asistant blue or a. You may be already running a ziby network with home assistant but are waiting for the home asisant yellow to arrive. When that does arrive, you will then be able to easily migrate your zigby network from one home assistant, instance, and move it to the next. And then just take ip unpluggy stick and put it at work an it will be migrating you'