tickets/DM-37655: Add convienence interfaces to Pipeline class

[natelust]

Checklist

• ran Jenkins
• added a release note for user-visible changes to doc/changes

[codecov]

Codecov Report

Base: 80.74% // Head: 80.83% // Increases project coverage by +0.09% 🎉

Coverage data is based on head (6856567) compared to base (be262eb).
Patch coverage: 93.10% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #301      +/-   ##
==========================================
+ Coverage   80.74%   80.83%   +0.09%     
==========================================
  Files          58       58              
  Lines        6352     6408      +56     
  Branches     1169     1182      +13     
==========================================
+ Hits         5129     5180      +51     
- Misses        984      986       +2     
- Partials      239      242       +3     

Impacted Files	Coverage Δ
python/lsst/pipe/base/pipeline.py	62.89% <81.81%> (+1.22%)	⬆️
python/lsst/pipe/base/pipelineIR.py	86.27% <100.00%> (+0.03%)	⬆️
tests/test_pipeline.py	96.77% <100.00%> (+1.77%)	⬆️
python/lsst/pipe/base/graph/graph.py	81.62% <0.00%> (-0.53%)	⬇️

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[leeskelvin]

Thanks @natelust, a few minor comments which I hope are helpful.