docs: move to material theme

The material theme is more feature complete and flexibile,
providing better documentation for APIs and such.  This
commit is just the initial move.  The documents are functional,
but the layout and color schemes are subject to change.

Signed-off-by:  Eric Callahan <arksine.code@gmail.com>

docs/doc-requirements.txt

@@ -1,3 +1,2 @@
-mkdocs==1.5.3
-pymdown-extensions==10.7
+mkdocs-material==9.5.4
 compact_tables@git+https://github.com/Arksine/markdown-compact-tables@v1.0.0

docs/src/css/extras.css

@@ -0,0 +1,7 @@
+[data-md-color-scheme="slate"] {
+    --md-table-color: rgb(20, 20, 20);
+}
+
+thead th {
+    background-color: var(--md-table-color)
+}

mkdocs.yml

@@ -2,26 +2,77 @@ site_name: Moonraker
 site_url: https://moonraker.readthedocs.io
 repo_url: https://github.com/Arksine/moonraker
 nav:
-    - 'User Documentation':
     - Installation: installation.md
     - Configuration : configuration.md
     - 'Developer Documentation':
         - Remote API: web_api.md
         - Printer Objects: printer_objects.md
         - Components: components.md
-    - 'Miscellaneous':
-        - Contributing: contributing.md
+        - Contribution Guidelines: contributing.md
     - Changelog: changelog.md
 theme:
-    name: readthedocs
+    name: material
+    palette:
+        - scheme: default
+          primary: blue grey
+          accent: light blue
+          toggle:
+            icon: material/weather-sunny
+            name: Switch to Dark Mode
+        - scheme: slate
+          primary: black
+          accent: light blue
+          toggle:
+            icon: material/weather-night
+            name: Switch to Light Mode
+    font:
+        text: Roboto
+        code: Roboto Mono
+    features:
+        - navigation.top
+        - navigation.instant
+        - navigation.indexes
+        - navigation.expand
+        - toc.follow
+        - content.tabs.link
+        - search.share
+        - search.highlight
+        - search.suggest
+        - content.code.copy
+        - content.code.annotations
 plugins:
     - search
 markdown_extensions:
+    - abbr
     - admonition
-    - pymdownx.superfences
-    - pymdownx.highlight:
-        use_pygments: false
+    - attr_list
+    - def_list
+    - footnotes
+    - md_in_html
+    - toc:
+        permalink: true
+    - pymdownx.arithmatex:
+        generic: true
+    - pymdownx.betterem:
+        smart_enable: all
+    - pymdownx.caret
+    - pymdownx.details
+    - pymdownx.emoji:
+        emoji_index: !!python/name:materialx.emoji.twemoji
+        emoji_generator: !!python/name:materialx.emoji.to_svg
+    - pymdownx.highlight
     - pymdownx.inlinehilite
+    - pymdownx.keys
+    - pymdownx.mark
+    - pymdownx.smartsymbols
+    - pymdownx.superfences
+    - pymdownx.tabbed:
+        alternate_style: true
+    - pymdownx.tasklist:
+        custom_checkbox: true
+    - pymdownx.tilde
     - tables
     - compact_tables:
         auto_insert_break: true
+extra_css:
+    - src/css/extras.css