Add push to the Python Package Index

[eytanadler]

Purpose

This will enable people to install OpenAeroStruct with pip install openaerostruct

Expected time until merged

1 day

Type of change

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (non-backwards-compatible fix or feature)
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no API changes)
• Documentation update
• Maintenance update
• Other (please describe)

Testing

Checklist

• I have run flake8 and black to make sure the code adheres to PEP-8 and is consistently formatted
• I have run unit and regression tests which pass locally with my changes
• I have added new tests that prove my fix is effective or that my feature works
• I have added necessary documentation

[ewu63]

We should also update:

• installation docs
• README to add the pyPI badge

[codecov]

Codecov Report

Merging #387 (9658c3f) into main (d30e262) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #387   +/-   ##
=======================================
  Coverage   96.63%   96.63%           
=======================================
  Files          93       93           
  Lines        6009     6009           
=======================================
  Hits         5807     5807           
  Misses        202      202           

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