feat: optimize + sanitize svg sources with svgo

[pi0]

🔗 Linked issue

Resolves #25

❓ Type of change

• [ ] 📖 Documentation (updates to the documentation, readme, or JSdoc annotations)
• [ ] 🐞 Bug fix (a non-breaking change that fixes an issue)
• [x] 👌 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 enables svgo optimization for SVG sources.

With SVGO integration, also we can now properly sanitize svg files to remove xss possibilities. Even tough already we are enable Content-Security-Policy, it was only available for on demand server.

XSS plugin is based on https://github.com/svg/svgo/pull/1664 by @cakeinpanic's pending PR ❤️

📝 Checklist

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

[codecov[bot]]

Codecov Report

Merging #180 (5ab78e0) into main (3a2d92d) will decrease coverage by 0.61%. Report is 1 commits behind head on main. The diff coverage is 24.13%.

@@            Coverage Diff             @@
##             main     #180      +/-   ##
==========================================
- Coverage   54.62%   54.01%   -0.61%     
==========================================
  Files          11       11              
  Lines        1060     1083      +23     
  Branches       45       45              
==========================================
+ Hits          579      585       +6     
- Misses        481      498      +17     

Files	Coverage Δ
src/ipx.ts	68.27% <24.13%> (-4.30%)	:arrow_down: