fix(object): handle nested keys kebab-case style

[larbish]

🔗 Linked issue

New suite test to reproduce #70

❓ Type of change

• 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• 🐞 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)
• 🧹 Chore (updates to the build process or auxiliary tools and libraries)
• ⚠️ Breaking change (fix or feature that would cause existing functionality to change)

📚 Description

The test should be clear enough to understand what's going on. Any help, suggestion to fix this is appreciated.

📝 Checklist

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

[codecov]

Codecov Report

Merging #71 (3d5b81b) into main (d9ef2eb) will not change coverage.
The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main      #71   +/-   ##
=======================================
  Coverage   92.17%   92.17%           
=======================================
  Files          24       24           
  Lines        1623     1623           
  Branches      301      302    +1     
=======================================
  Hits         1496     1496           
  Misses        127      127           

Files Changed	Coverage Δ
src/proxy/_utils.ts	95.62% <100.00%> (ø)