docs: enable required mkdocs plugins

We had to use --unsafe in check-yaml so that it checks syntax but does
not attempt to load the YAML itself. Otherwise an error gets triggered
by the emoji plugin of mkdocs.

Author: qkaiser

.pre-commit-config.yaml

@@ -11,6 +11,7 @@ repos:
       - id: check-json
       - id: check-toml
       - id: check-yaml
+        args: ['--unsafe']
       - id: check-added-large-files
 
   - repo: local

mkdocs.yml

@@ -24,12 +24,19 @@ markdown_extensions:
       permalink: true
   - pymdownx.magiclink
   - def_list
+  - attr_list
   - admonition
+  - pymdownx.details
+  - pymdownx.superfences
   - pymdownx.highlight:
       anchor_linenums: true
   - pymdownx.inlinehilite
   - pymdownx.snippets
-  - pymdownx.superfences
+  - pymdownx.tabbed:
+      alternate_style: true
+  - pymdownx.emoji:
+      emoji_index: !!python/name:material.extensions.emoji.twemoji
+      emoji_generator: !!python/name:material.extensions.emoji.to_svg
 
 theme:
   name: material