fix: use relative paths in tsconfig.json

[danielroe]

🔗 Linked issue

❓ 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

Without a baseUrl we cannot pass in absolute paths in nitro aliases. This ensures that our aliases + includes are relative to the tsconfig file itself.

📝 Checklist

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

[codecov]

Codecov Report

Merging #1518 (8b0663c) into main (6217581) will decrease coverage by 0.02%.
The diff coverage is 61.11%.

@@            Coverage Diff             @@
##             main    #1518      +/-   ##
==========================================
- Coverage   76.26%   76.25%   -0.02%     
==========================================
  Files          73       73              
  Lines        7466     7478      +12     
  Branches      732      734       +2     
==========================================
+ Hits         5694     5702       +8     
- Misses       1771     1775       +4     
  Partials        1        1              

Files Changed	Coverage Δ
src/build.ts	85.32% <61.11%> (-0.49%)	⬇️