MetaDrive Bicycle Class implementation

[revacholiere]

Description

Adds Scenic's Bicycle class for the MetaDrive simulator.

Issue Link

N/A

Checklist

• I have tested the changes locally via pytest and/or other means
• I have added or updated relevant documentation
• I have autoformatted the code with black and isort
• I have added test cases (if applicable)

Additional Notes

The class is implemented as a subclass of Pedestrian. It uses MetaDrive's Cyclist class to spawn objects in the simulation.

This is the modification we did for the paper ScenicRules.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 89.69%. Comparing base (cbc265d) to head (4e012de).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #438      +/-   ##
==========================================
- Coverage   89.70%   89.69%   -0.01%     
==========================================
  Files          48       48              
  Lines       13190    13190              
==========================================
- Hits        11832    11831       -1     
- Misses       1358     1359       +1     

see 3 files with indirect coverage changes

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