feat(workshops): implement static workshop listing page (#188)

- Fixed broken Jinja2 template rendering (was showing raw code)
- Created custom workshops.html template with workshop data
- Simplified navigation title from full SEO title to 'Workshops'
- Added workshop post files for future blog integration
- Configured blog plugin for workshops (currently unused)
- Removed broken Jinja2 macro implementation

Changes:
- docs/workshops/index.md: Clean title, template directive
- mkdocs.yml: Blog plugin workshop configuration
- overrides/workshops.html: Static workshop template with FontAwesome icons
- docs/workshops/posts/: Individual workshop markdown files
- docs/templates/workshop-update-guide.md: Update documentation

Result: Clean, professional workshop page with proper VHS link handling
(upcoming workshops have links, past workshops don't)

mkdocs.yml

@@ -67,6 +67,15 @@ plugins:
       pagination: true
       archive: true
       authors: true
+  - blog:
+      blog_dir: workshops
+      blog_toc: false
+      post_url_format: "{slug}"
+      post_date_format: "dd.MM.yyyy"
+      archive: false
+      pagination: false
+      categories: true
+      categories_toc: true
   - search
   - redirects:
       redirect_maps: