add functions to download WFSC WL image data

[mperrin]

Sometimes it's useful to download the weak lens image data. This PR adds to mast_wss some functions for doing so, either by specifying a WFSC program ID and observation number, or else by default just getting the most recent WFSC image data. The download_wfsc_images function retrieves the level-3 wfscmb data products from MAST and downloads into the current working directory.

This is probably less useful to general users of webbpsf, and is intended mainly as a convenience for us on the mission team. But can also be useful for expert-level external users too, in some select cases. In any case I think this fits in well as part of the mast_wss submodule.

(For right now, defaults to only downloading from NRCA3, but this is a user-selectable parameter in case data from one of the other detectors is wanted)

[pep8speaks]

Hello @mperrin, Thank you for updating !

• In the file webbpsf/mast_wss.py:

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Comment last updated at 2024-04-08 16:51:17 UTC

[mperrin]

FYI to @grbrady. (This feature for webbpsf was partially inspired by wanting an quick tool to download more WL data, for testing out with stpr)

[codecov[bot]]

Codecov Report

Attention: Patch coverage is 13.15789% with 33 lines in your changes are missing coverage. Please review.

Project coverage is 59.20%. Comparing base (c5ea52d) to head (b536111). Report is 6 commits behind head on develop.

:exclamation: Current head b536111 differs from pull request most recent head 4fd765f. Consider uploading reports for the commit 4fd765f to get more accurate results

Files	Patch %	Lines
webbpsf/mast_wss.py	13.15%	33 Missing :warning:

Additional details and impacted files

@@             Coverage Diff             @@
##           develop     #827      +/-   ##
===========================================
- Coverage    59.91%   59.20%   -0.71%     
===========================================
  Files           16       16              
  Lines         6865     6955      +90     
===========================================
+ Hits          4113     4118       +5     
- Misses        2752     2837      +85     

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