analysis: introduce ISegmentStoreProvider

analysis: introduce ISegmentStoreProvider

This is an interface extraction from AbstractSegmentStoreAnalysisModule
that reduces the coupling. Now analyses no longer need to be dependent
on events and event requests to generate segments. This open the door
for segments being generated from other sources, such as, but not
limited
to:

* State systems
* Other segment stores
* Environment variables
* Aspects
* Concepts
* Flat data files.
* ...

Change-Id: If95f97d6d98752414747d262c542200f807539ab
Signed-off-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
Signed-off-by: Jean-Christian Kouame <jean-christian.kouame@ericsson.com>
Reviewed-on: https://git.eclipse.org/r/65597
Reviewed-by: Genevieve Bastien <gbastien+lttng@versatic.net>
Tested-by: Genevieve Bastien <gbastien+lttng@versatic.net>
Reviewed-by: Hudson CI