galera monitor node autodiscovery

Adding a feature where the galeramon also monitors galera membership.
this shoulds be decently easy to perform by monitoring the wsrep_incoming_adresses, additionnaly change in membership can be spotted by monitoring wsrep_conf_id

ideal features would be :
1. auto create the cortesponding server object upon successful connection (assuming same specs as other cluster member baring the ip/fqdn
it could look like :
auto-discovery=yes|no (default:no)

2. add the new node to the monitor
it could look like :
auto-monitor=yes|no (default:no)

3. upon option activation, try and add the new node a corresponding service(s)
it could look like
auto-add-to-service=<SERVICE-NAME1>[,<SERVICE-NAME2>,...]