Add MkDocs documentation

Covers: overview, setup, API reference, configuration,
testing, deployment, and known quirks.

mkdocs.yml

@@ -0,0 +1,45 @@
+site_name: email-classifier
+site_description: FastAPI service that classifies email using a configurable LLM backend
+site_url: https://git.danhenry.dev/daniel/email-classifier
+
+repo_name: daniel/email-classifier
+repo_url: https://git.danhenry.dev/daniel/email-classifier
+
+nav:
+  - Home: index.md
+  - Setup: setup.md
+  - API Reference: api.md
+  - Configuration: configuration.md
+  - Testing Locally: testing.md
+  - Deployment: deployment.md
+  - Known Quirks: quirks.md
+
+theme:
+  name: material
+  palette:
+    - scheme: default
+      primary: indigo
+      accent: indigo
+      toggle:
+        icon: material/brightness-7
+        name: Switch to dark mode
+    - scheme: slate
+      primary: indigo
+      accent: indigo
+      toggle:
+        icon: material/brightness-4
+        name: Switch to light mode
+  features:
+    - navigation.instant
+    - navigation.tracking
+    - content.code.copy
+
+markdown_extensions:
+  - pymdownx.highlight:
+      anchor_linenums: true
+  - pymdownx.snippets:
+      autoindent: true
+  - pymdownx.superfences
+  - admonition
+  - toc:
+      permalink: true