lib: migrate from ncc to esbuild

[ryancyq]

ncc uses webpack internally, which resolves packages using CJS semantics.

switching to esbuild for full esm support.

[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 97.31%. Comparing base (b838de7) to head (a97c04c).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #229   +/-   ##
=======================================
  Coverage   97.31%   97.31%           
=======================================
  Files          11       11           
  Lines         261      261           
  Branches       59       59           
=======================================
  Hits          254      254           
  Misses          7        7           

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