Add new templates and tests for improved functionality

- Created index.html template for the homepage with service cards and partner logos.
- Added page_from_md.html template for rendering pages from markdown.
- Developed services.html template detailing various services offered.
- Implemented tests for link handling in markdown, ensuring external links open in new tabs and internal links function correctly.
- Enhanced markdown parser tests to validate heading extraction, content rendering, and link safety.
- Introduced utility tests for template rendering, HTML minification, and JavaScript minification.

Co-authored-by: Copilot <copilot@github.com>

html/js/partner.js

@@ -0,0 +1 @@
+function partnerRotate(interval = 3000) { const partners = document.querySelectorAll("img[src*='img/partner/']"); for (let i = 1; i < partners.length; i++) { partners[i].classList.add("hidden"); } let currentIndex = 0; const totalPartners = partners.length; setInterval(() => { partners[currentIndex].classList.add("hidden"); currentIndex = (currentIndex + 1) % totalPartners; partners[currentIndex].classList.remove("hidden"); }, interval); } window.onload = function () { partnerRotate(5000); };