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>

templates/components/section.html

@@ -0,0 +1,13 @@
+<div class="section">
+  <div class="section-container container">
+    <h2>{{ section.title }}</h2>
+    {% if section.content %}
+    <div class="section-content">{{ section.content | safe }}</div>
+    {% endif %} {% if section.cards %}
+    <div class="section-cards">
+      {% for card in section.cards %} {% include 'components/card.html' %} {%
+      endfor %}
+    </div>
+    {% endif %}
+  </div>
+</div>