Updates to UAV model

[teubert]

Specifically,

• Moving properties mass, dynamics, etc. into parameters - this is important for pickleability
• Update visualize trajectory to work without reference trajectory (just plots predicted trajectory)
• Update visualize trajectory to support prefix (allows it to be used with Composite Models)

[github-actions]

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[codecov-commenter]

Codecov Report

Attention: 11 lines in your changes are missing coverage. Please review.

Comparison is base (523e653) 83.37% compared to head (62e92b3) 83.36%.

Files	Patch %	Lines
...c/progpy/models/aircraft_model/small_rotorcraft.py	56.00%	11 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##              dev     #125      +/-   ##
==========================================
- Coverage   83.37%   83.36%   -0.01%     
==========================================
  Files         100      100              
  Lines       10427    10428       +1     
==========================================
  Hits         8693     8693              
- Misses       1734     1735       +1     

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[kjjarvis]

Nice small edits to move a few properties into parameters for ease with pickling