⬆ Upgrade Isort to version 5.x.x

[tiangolo]

⬆ Upgrade Isort to version 5.x.x. Update Isort configs.

Move docs src examples to ./docs_src/.

[github-actions]

🚀 Deployed on https://5f0774bd00bf5269e50c77ac--typertiangolo.netlify.app

[codecov]

Codecov Report

Merging #137 into master will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##            master      #137   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files          242       242           
  Lines         4502      4504    +2     
=========================================
+ Hits          4502      4504    +2     

Impacted Files	Coverage Δ
docs_src/arguments/default/tutorial001.py	100.00% <ø> (ø)
docs_src/arguments/default/tutorial002.py	100.00% <ø> (ø)
docs_src/arguments/envvar/tutorial001.py	100.00% <ø> (ø)
docs_src/arguments/envvar/tutorial002.py	100.00% <ø> (ø)
docs_src/arguments/envvar/tutorial003.py	100.00% <ø> (ø)
docs_src/arguments/help/tutorial001.py	100.00% <ø> (ø)
docs_src/arguments/help/tutorial002.py	100.00% <ø> (ø)
docs_src/arguments/help/tutorial003.py	100.00% <ø> (ø)
docs_src/arguments/help/tutorial004.py	100.00% <ø> (ø)
docs_src/arguments/help/tutorial005.py	100.00% <ø> (ø)
... and 203 more

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[github-actions]

🚀 Deployed on https://5f0776e8a5527d02e4774869--typertiangolo.netlify.app

[github-actions]

🚀 Deployed on https://5f0777b7bd8766fb4288a11d--typertiangolo.netlify.app