Pelican search updates

[Informatic]

• Some content updates
• Add missing url tags in pages with save_as
• Fix builds on python 3.10
• Fix pyyaml usage on latest version
• Add pelican-search plugin
  • relevant pelican-theme-webosbrew update stork/pelican-search integration pelican-theme-webosbrew#1
  • stork binary installed in CI runtime configuration
• Change default URL generation scheme
  • Not entirely sure about that - we will probably want to either add redirects from old URL scheme, or drop this change completely. I find it kinda annoying URL scheme is different in different places right now. Up for discussion.