[INTERNAL] Add monitoring-related Eclipse look-alikes to Saros/I

This contains three interfaces and dummy implementations for each.

Change-Id: I9729616809abfb799f15b018875327f223b80085
Reviewed-on: http://saros-build.imp.fu-berlin.de/gerrit/1592
Tested-by: Jenkins CI
Reviewed-by: Franz Zieris <zieris@inf.fu-berlin.de>