add translation for Simplified Chinese (zh_Hans)

[renph]

Description

add translation for Simplified Chinese (zh_Hans)

Related Issue

Motivation and Context

Adding translation for Simplified Chinese (zh_Hans), so that more people could use this package.

How Has This Been Tested?

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have run the pre-commit run command to format and lint.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have added my name and/or github handle to AUTHORS.rst
• I have added my change to CHANGES.rst
• All new and existing tests passed.

[renph]

@com4 @jezdez Please review my changes if you got a chance

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (29108a5) 96.87% compared to head (3a46e3a) 96.87%.
Report is 5 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #1281   +/-   ##
=======================================
  Coverage   96.87%   96.87%           
=======================================
  Files          23       23           
  Lines        1278     1278           
  Branches      211      211           
=======================================
  Hits         1238     1238           
  Misses         21       21           
  Partials       19       19           

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[ddabble]

Nice, thanks! 😊