feat: Add automated deployment

Author: durellwilson

.github/workflows/deploy.yml

@@ -0,0 +1,26 @@
+name: Deploy
+on:
+  push:
+    branches: [main]
+permissions:
+  contents: write
+  pages: write
+jobs:
+  deploy:
+    runs-on: ubuntu-latest
+    steps:
+    - uses: actions/checkout@v4
+    - run: |
+        if [ -f "book/book.toml" ]; then
+          curl -L https://github.com/rust-lang/mdBook/releases/download/v0.4.36/mdbook-v0.4.36-x86_64-unknown-linux-gnu.tar.gz | tar xz
+          cd book && ../mdbook build
+        fi
+        mkdir -p dist
+        if [ -d "book/book" ]; then cp -r book/book/* dist/; fi
+        if [ -d "build" ]; then cp -r build/* dist/; fi
+        if [ -d "docs" ]; then cp -r docs/* dist/; fi
+        echo "# Deployed $(date)" > dist/index.html 2>/dev/null || true
+    - uses: peaceiris/actions-gh-pages@v3
+      with:
+        github_token: ${{ secrets.GITHUB_TOKEN }}
+        publish_dir: dist