[ENH] Make sure workflows do not run again for participant/sessions that already have expected output

[michellewang]

Closes #246

Changes:

• DicomReorgWorkflow runs for all downloaded participant/session pairs that have not been organized
• BidsConversionWorkflow runs for all organized participant/session pairs that have not been bidsified
• PipelineRunner workflow runs for all bidsified participant/session pairs that do not have SUCCESS in the imaging bagel
• PipelineTracker workflow runs for all bidsified participant/session pairs

TODOs

• [ ] Once #238 is merged we should probably add a call to check_pipeline_version in PipelineRunner.get_participants_sessions_to_run() and so that this doesn't fail if the user does not specify the version

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 98.53%. Comparing base (2741d49) to head (a2bbc23).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #259 +/- ## ========================================== + Coverage 98.33% 98.53% +0.19% ========================================== Files 28 28 Lines 1744 1775 +31 ========================================== + Hits 1715 1749 +34 + Misses 29 26 -3 ```

:umbrella: View full report in Codecov by Sentry.
:loudspeaker: Have feedback on the report? Share it here.

[michellewang]

@nikhil153 I say let's not have pipeline_step in bagels just now -- would probably require a discussion with @alyssadai sometime but it's not a huge priority. Currently we can only track at the level of pipelines, not pipeline steps