TMF: Allow experiments to have analysis and display them in UI

TMF: Allow experiments to have analysis and display them in UI

Initialize and execute the analysis when an experiment is opened. They are
also displayed in the UI, under the experiment.

Change-Id: I6afd5e8043734ba12bc0fc90bebffa418ba4b6da
Signed-off-by: Geneviève Bastien <gbastien+lttng@versatic.net>
Reviewed-on: https://git.eclipse.org/r/22540
Reviewed-by: Bernd Hufmann <bernd.hufmann@ericsson.com>
IP-Clean: Bernd Hufmann <bernd.hufmann@ericsson.com>
Tested-by: Hudson CI