Lots of new models for clean sheet aircraft design

[eytanadler]

Purpose

This PR includes a host of new features for aircraft design purposes, many of which were developed for this paper. These include

• Weight buildup for tube and wing configuration
• Weight buildup for BWB configuration
• Drag buildup for tube and wing configuration
• Drag buildup for BWB configuration
• Empirical CLmax estimates
• Critical section VLM-based CLmax estimate
• Other miscellaneous components (such as tail volume coefficient comps)
• Bumps oldest OpenMDAO version from 3.10 to 3.21 (3.10 didn't actually work, but it wasn't being properly tested, I fixed that too)
• Added upper bound to OpenMDAO version (see #65)

Type of change

What types of change is it? Select the appropriate type(s) that describe this PR

• New feature (non-breaking change which adds functionality)

Testing

Explain the steps needed to test the new code to verify that it does indeed address the issue and produce the expected behavior.

Checklist

Put an x in the boxes that apply.

• [x] I have run unit and regression tests which pass locally with my changes
• [x] I have added new tests that prove my fix is effective or that my feature works
• [x] I have added necessary documentation

[codecov[bot]]

Codecov Report

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

Project coverage is 82.08%. Comparing base (5f2cb40) to head (41c4ec5).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #64 +/- ## ========================================== + Coverage 79.98% 82.08% +2.09% ========================================== Files 85 103 +18 Lines 9300 10717 +1417 ========================================== + Hits 7439 8797 +1358 - Misses 1861 1920 +59 ```

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