tmf: Show all trace analysis and views under the experiment

tmf: Show all trace analysis and views under the experiment

This patch introduces an aggregate analysis element in the project
explorer that aggregates all common trace analysis elements for each
contained trace in the experiment

Change-Id: I4956be83e4d3be05ca4ff2aba44ceac7f1475788
Signed-off-by: Bernd Hufmann <Bernd.Hufmann@ericsson.com>
Reviewed-on: https://git.eclipse.org/r/95842
Reviewed-by: Hudson CI
Reviewed-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
Tested-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
Reviewed-by: Genevieve Bastien <gbastien+lttng@versatic.net>
Tested-by: Genevieve Bastien <gbastien+lttng@versatic.net>