addDevice
Adds a linked device to the current account.
Parameters
uri
the tsdevice:/ uri provided (typically in qr code form) by the new device. Example: tsdevice:/?uuid=jAaZ5lxLfh7zVw5WELd6-Q&pub_key=BfFbjSwmAgpVJBXUdfmSgf61eX3a%2Bq9AoxAVpl1HUap9
Throws
if signald sends an error response or the incoming message is invalid
if the request to the socket fails
caused by syntax errors with the provided linking URI