feat: Add new macro tabbed_services_view to generate content tabs view of all...

• Add new macro tabbed_services_view
• Enable PymdownX extensions snippets, tabbed
• Add portfolio & service category information into services.yml + Config class support
• Refresh Services index page and integrate new macro table
• Restructure & refresh Home & Contact areas into single unified area

Closes:

• #300 (closed)
• #301 (closed)
• #302 (closed)