Set up Tailwind CSS build pipeline and bilingual homepage content
- Install and configure Tailwind CSS with tailwind.config.js
- Create npm scripts for building Tailwind (build/watch)
- Add .gitignore to exclude node_modules and build artifacts
- Create bilingual homepage content (content/it/_index.md, content/en/_index.md)
- Update baseof.html to use compiled main.min.css
- Fix .ByDate deprecation in list.html template (use sort function)
- Fix main.css pre element to support rgba with opacity
- Homepage now displays with full dark/light theme styling
