NetworkSerialization

[Mr-Markus]

There have to be a solution for NetworkStateSerialization, which means that if network is shutdown or startup all known devices should still be there

[Mr-Markus]

There is now a property named NetworkStateSerializer in ZigBeeNetworkManager which can be set by the caller to let him implement his own logic or database for the ZigBeeNodes

If a node is added, updated or removed the Serialize or Deserialize Method of the implemented class is called.

I implemented an example in the PlayGround project, and the after network startup my known devices are in the NetworkManager.Nodes List

So it is now possible to restart the network and restore all known devices to send them messages again without a DeviceAnnce Message received