fix: add node16 compatible type declaration

[danielroe]

🔗 Linked issue

nuxt/nuxt#18431

❓ Type of change

• 📖 Documentation (updates to the documentation or readme)
• 🐞 Bug fix (a non-breaking change that fixes an issue)
• 👌 Enhancement (improving an existing functionality like performance)
• ✨ New feature (a non-breaking change that adds functionality)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

This adds type support to imports from nitropack in TS Node16 style module resolution.

📝 Checklist

• I have linked an issue or discussion.
• I have updated the documentation accordingly.

[codecov]

Codecov Report

Merging #868 (a1a600a) into main (5830bf3) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main     #868   +/-   ##
=======================================
  Coverage   67.32%   67.32%           
=======================================
  Files          59       59           
  Lines        5834     5834           
  Branches      633      633           
=======================================
  Hits         3928     3928           
  Misses       1897     1897           
  Partials        9        9           

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.