feat(lib): use and add more config option

[jeertmans]

Closes #441

[codecov]

Codecov Report

Attention: Patch coverage is 75.00000% with 2 lines in your changes missing coverage. Please review.

Project coverage is 80.31%. Comparing base (e2d8c56) to head (6543f85).

Files	Patch %	Lines
manim_slides/slide/base.py	71.42%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #452      +/-   ##
==========================================
- Coverage   80.37%   80.31%   -0.06%     
==========================================
  Files          22       22              
  Lines        1824     1829       +5     
==========================================
+ Hits         1466     1469       +3     
- Misses        358      360       +2     

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