feat: add Nix build support for zot and related tools

[rchincha]

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 91.67%. Comparing base (008527b) to head (23cb39f).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #3543   +/-   ##
=======================================
  Coverage   91.67%   91.67%           
=======================================
  Files         185      185           
  Lines       25852    25852           
=======================================
  Hits        23699    23699           
  Misses       1392     1392           
  Partials      761      761           

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