Word cloud generator enhanced

A fork of https://www.jasondavies.com/wordcloud/ for generating word cloud visualizations.

Blog post: https://nanx.me/blog/post/rethinking-word-cloud-generator/

Changelog

User-visible changes:

• Add color palette selection feature, offering color palettes from
  • Tableau
  • Viridis
  • ColorBrewer
  • ggplot2
  • D3
  • Okabe-Ito
  • Gephi
  • FlatUI
• Update the default word cloud typeface from Impact to a font based on user's operating system.
  • macOS: Avenir Next Condensed
  • Windows: Franklin Gothic Medium
  • Linux: Liberation Sans
• Update the default values for graphical parameter inputs:
  • angle-count: from 5 to 2.
  • angle-from: from -60 to -90.
  • angle-to: from 60 to 0.
• Use native font stack for the UI.

Other quality of life changes:

• Refactor HTML UI with Bootstrap 5.
• Apply Tailwind CSS look and feel for UI components.
• Fix HTML structure, isolate inline CSS styles into a separate file.
• Refactor the SVG download feature with pure client-side solution.
• Upgrade d3 version to 3.5.17.
• Remove Google Ads.