chore: Make Validator clonable

[Stranger6667]

Closes #809

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.88%. Comparing base (f9231ea) to head (b4dd74a).
⚠️ Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #870   +/-   ##
=======================================
  Coverage   93.87%   93.88%           
=======================================
  Files          78       78           
  Lines       15980    15992   +12     
=======================================
+ Hits        15002    15014   +12     
  Misses        978      978           

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[codspeed-hq]

CodSpeed Performance Report

Merging #870 will not alter performance

_{Comparing dd/validator-clone (b4dd74a) with master (f9231ea)}

Summary

✅ 61 untouched