Add pkgdown author profiles

[gvegayon]

Summary

• link George Vega Yon to https://ggvy.cl while preserving his displayed name
• add profile links for every package author listed in DESCRIPTION
• add a source pkgdown configuration where the published site did not already have one

Validation

• loaded the package metadata with pkgdown
• verified exact author-name matching against DESCRIPTION
• verified every configured author mapping contains only an href attribute

Related to gvegayon/website#32.

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 81.45%. Comparing base (53d05f8) to head (4cc7722).

Additional details and impacted files

@@           Coverage Diff           @@
##           master      #10   +/-   ##
=======================================
  Coverage   81.45%   81.45%           
=======================================
  Files           9        9           
  Lines         453      453           
=======================================
  Hits          369      369           
  Misses         84       84           

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[github-actions]

Thank you for your contribution @gvegayon 🚀! The pkgdown site preview is ready for review 👉 Download here 👈!
_{(The artifact expires on 2026-11-14T00:22:58Z. You can re-generate it by re-running the workflow here.)}