Changes

linux.core: Add priority/thread name statistics data provider factory

This commit creates a new data provider for the new priority/thread name
statistics analysis by extending the
AbstractSegmentStoreStatisticsDataProviderFactory class. The data
provider has a private class called PriorityThreadNameStatisticsAnalysis
which specifies that entries for the priority/thread name statistics
analysis should be grouped by priority and thread name.

[Added] Data provider factory for priority/thread name statistics
analysis

Change-Id: Id5ad6a8301e1188916f0abc40006c11045b54976
Signed-off-by: Hoang Thuan Pham <hoang.pham@calian.ca>
Reviewed-on: https://git.eclipse.org/r/c/tracecompass/org.eclipse.tracecompass/+/204382
Tested-by: Trace Compass Bot <tracecompass-bot@eclipse.org>
Tested-by: Matthew Khouzam <matthew.khouzam@ericsson.com>
Reviewed-by: Patrick Tasse <patrick.tasse@gmail.com>
Reviewed-by: Matthew Khouzam <matthew.khouzam@ericsson.com>