added workflow yaml file for running black and isort

[jyan1999]

Description

added workflow yaml file for running black and isort

Fixes #94

Type of change

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to not work as expected)
• [ ] This change requires a documentation update

Checklist:

• [X] I have commented my code, particularly in hard-to-understand areas
• [X] I have made corresponding changes to the documentation -----not necessary for this update
• [X] My changes generate no new warnings
• [X] I have added tests that prove my fix is effective or that my feature works -- manual testings done in personal repo

[micahcarroll]

You'll have to actually run isort and black across all files of the repo for the status checks to pass!

[codecov[bot]]

Codecov Report

Merging #96 (c3dc0cd) into master (a778db7) will increase coverage by 0.60%. The diff coverage is n/a.

@@            Coverage Diff             @@
##           master      #96      +/-   ##
==========================================
+ Coverage   81.49%   82.09%   +0.60%     
==========================================
  Files          16       14       -2     
  Lines        3669     3575      -94     
==========================================
- Hits         2990     2935      -55     
+ Misses        679      640      -39     

Impacted Files	Coverage Δ
overcooked_ai_py/mdp/overcooked_env.py	70.39% <0.00%> (-0.46%)	:arrow_down:
overcooked_ai_py/planning/search.py	51.77% <0.00%> (-0.41%)	:arrow_down:
overcooked_ai_py/mdp/overcooked_mdp.py	91.86% <0.00%> (-0.19%)	:arrow_down:
overcooked_ai_py/planning/planners.py	84.89% <0.00%> (-0.10%)	:arrow_down:
overcooked_ai_py/agents/benchmarking.py	54.44% <0.00%> (ø)
overcooked_ai_py/data/planners/__init__.py	100.00% <0.00%> (ø)
overcooked_ai_py/mdp/overcooked_trajectory.py	76.00% <0.00%> (ø)
overcooked_ai_py/visualization/pygame_utils.py	69.01% <0.00%> (ø)
...rcooked_ai_py/visualization/visualization_utils.py	41.66% <0.00%> (ø)
overcooked_ai_py/__init__.py
... and 5 more

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