TMF: Move the LTTng ust memory usage analysis to the core plugin

TMF: Move the LTTng ust memory usage analysis to the core plugin

And use the analysis output extension point to hook the view to it

Change-Id: I5a4a77e3870e5311ca5bf9efb3a7a655c4fdd9f0
Signed-off-by: Geneviève Bastien <gbastien+lttng@versatic.net>
Reviewed-on: https://git.eclipse.org/r/22935
Tested-by: Hudson CI
Reviewed-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
IP-Clean: Bernd Hufmann <bernd.hufmann@ericsson.com>
Tested-by: Bernd Hufmann <bernd.hufmann@ericsson.com>