Migrate Menoci Theme to D9

Urgency High because all UI requires the bootstrap theme.

Functionalities

Unfortunately there is no documentation what exactly the Menoci-Theme does. That's why this list might be uncomplete:

• Enables Bootstrap functionalities (Bootstrap subtheme)
• Provide images/logos
  • Base logo/favicon
  • img directory (incl svg dir)
• Provide fonts
• Provide Icons see issue
  • Glyphicons - not free available for Bootstrap 5
  • Bootrstap Icons (used as replacement for Glyphicons)
  • Font Awesome Icons
• Hook implementations:
  • sfb_process_page (/templates/system/page.vars.php)
  • sfb_menu_link (/template.php)
  • sfb_preprocess_image_style (/template.php)
• Template implementations:
  • page.tpl.php
  • page--front.tpl.php
  • page.vars.php