chore: Add black profile to isort

[matthewfeickert]

• Add black profile for isort avoid style conflicts between isort
  and black.

[codecov]

Codecov Report

Base: 68.75% // Head: 68.75% // No change to project coverage 👍

Coverage data is based on head (998f88c) compared to base (7859407).
Patch has no changes to coverable lines.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #137   +/-   ##
=======================================
  Coverage   68.75%   68.75%           
=======================================
  Files           2        2           
  Lines         208      208           
  Branches       56       56           
=======================================
  Hits          143      143           
  Misses         58       58           
  Partials        7        7           

Flag	Coverage Δ
unittests-3.10	67.30% <ø> (ø)
unittests-3.6	66.00% <ø> (ø)

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