ENH: add shot-per-shot total intensity option to run_analysis task

[fredericpoitevin]

Goal: add an option to the run_analysis task to add a key to self.stats that contains an array of the total intensity per event.

Expected behavior:

rd = RunDiagnostics(exp='amo11416',run=143,det_type='pnccdFront')
rd.compute_run_stats(total_intensity=True)
rd.stats['total_intensity'] # <== returns an array that contains the total intensity for each event in the run.

In terms of command-line usage, the behavior should be something like:

elog_submit.sh -c config.yaml -t run_analysis -n 120 ...

where config.yaml has the additional argument for the run_analysis task, something like:

run_analysis:
  total_intensity: True

[fredericpoitevin]

Turns out we already have something very similar with self.stats_final['mean'] which is displayed back in the eLog thanks to self.visualize_stats()