Add safetensors io

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Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 92.1%. Comparing base (691269e) to head (2673f46).
Report is 1 commits behind head on main.

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Additional details and impacted files

@@           Coverage Diff           @@
##            main      #9     +/-   ##
=======================================
+ Coverage   91.8%   92.1%   +0.3%     
=======================================
  Files          4       4             
  Lines        391     407     +16     
  Branches      10      11      +1     
=======================================
+ Hits         359     375     +16     
  Misses        25      25             
  Partials       7       7             

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