Add custom icons and flags

mkdocs.yml

@@ -2,6 +2,7 @@ site_name: StarCat Systems
 site_url: https://about.starcat.systems
 theme:
   name: material
+  custom_dir: overrides
   palette:
     - media: "(prefers-color-scheme: light)"
       scheme: default
@@ -68,6 +69,9 @@ markdown_extensions:
   - pymdownx.emoji:
       emoji_index: !!python/name:material.extensions.emoji.twemoji
       emoji_generator: !!python/name:material.extensions.emoji.to_svg
+      options:
+        custom_icons:
+          - overrides/.icons
   - pymdownx.highlight:
       anchor_linenums: true
       line_spans: __span