Support thread workers

[Ananto30]

As @shimondoodkin didn't response for a long time, taking over his PR - https://github.com/Ananto30/zero/pull/20

This closes https://github.com/Ananto30/zero/pull/20 and https://github.com/Ananto30/zero/pull/21

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 97.72%. Comparing base (c68b307) to head (902906b).

Additional details and impacted files

@@            Coverage Diff             @@
##             main      #60      +/-   ##
==========================================
+ Coverage   97.35%   97.72%   +0.36%     
==========================================
  Files          24       24              
  Lines         833      836       +3     
==========================================
+ Hits          811      817       +6     
+ Misses         22       19       -3     

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