Carla Interface Convert record to Absolute Path

[Eric-Vin]

Description

Code to ensure Carla interface record parameter is an absolute path.

Issue Link

#21

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

@dfremont @abanuelo Unable to test these changes with Carla at the moment due to server issues, but perhaps we could do so with the new simulator CI?

[codecov]

Codecov Report

Attention: Patch coverage is 0% with 1 lines in your changes are missing coverage. Please review.

Project coverage is 85.86%. Comparing base (d5a21fc) to head (54c9d42).

Files	Patch %	Lines
src/scenic/simulators/carla/simulator.py	0.00%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #223      +/-   ##
==========================================
- Coverage   85.89%   85.86%   -0.03%     
==========================================
  Files         144      144              
  Lines       24767    24768       +1     
==========================================
- Hits        21274    21268       -6     
- Misses       3493     3500       +7     

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[abanuelo]

Tested with @Eric-Vin and reported that files getting created with relative path of .