feat(externals): improved output package.json

[pi0]

🔗 Linked issue

resolves #1598

related to #1367

❓ 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

This PR improves the contents of generated .output/server/package.json with using dependencies field for written packages information and also a generated name/version based on user's package.json and added type: "module" field as is our assumption. Also adds aliased packages as dependencies.

Example: (with disabled experimental.bundleRuntimeDependencies flag)

{
  "name": "nitropack-prod",
  "version": "2.5.2",
  "type": "module",
  "private": true,
  "dependencies": {
    "cookie-es": "1.0.0",
    "defu": "6.1.2",
    "destr": "2.0.1",
    "h3-nightly": "1.8.1-1692089733.8af0474",
    "hookable": "5.5.3",
    "iron-webcrypto": "0.8.0",
    "klona": "2.0.6",
    "node-fetch-native": "1.2.0",
    "ofetch": "1.1.1",
    "ohash": "1.1.3",
    "pathe": "1.1.1",
    "radix3": "1.0.1",
    "scule": "1.0.0",
    "ufo": "1.2.0",
    "uncrypto": "0.1.3",
    "unctx": "2.3.1",
    "unenv": "1.7.1",
    "unstorage": "1.9.0"
  }
}

📝 Checklist

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

[codecov]

Codecov Report

Merging #1607 (efc0492) into main (bc9644e) will decrease coverage by 0.02%.
The diff coverage is 100.00%.

❗ Current head efc0492 differs from pull request most recent head c6e9bea. Consider uploading reports for the commit c6e9bea to get more accurate results

@@            Coverage Diff             @@
##             main    #1607      +/-   ##
==========================================
- Coverage   76.26%   76.24%   -0.02%     
==========================================
  Files          76       76              
  Lines        7802     7797       -5     
  Branches      779      783       +4     
==========================================
- Hits         5950     5945       -5     
  Misses       1850     1850              
  Partials        2        2              

Files Changed	Coverage Δ
src/rollup/plugins/externals.ts	93.08% <100.00%> (-0.07%)	⬇️