synccanon-964287: Add server event support
synccanon-964287: Add server event support

Add simple [add|remove]Listener functions on the 'remoted' module.

Signed-off-by: Joe Walker <7a17872fbb32c7d760c9a16ee3076daead11efcf@mozilla.com>

mozilla/gcli,mozilla/gcli,joewalker/gcli,joewalker/gcli,mozilla/gcli