feat: Set up MkDocs documentation site with Material theme

- Created comprehensive MkDocs configuration with Material theme
- Set up organized documentation structure for ALwrity features
- Added GitHub Pages deployment workflow
- Created initial documentation pages:
  - Homepage with feature overview
  - Quick Start guide
  - Blog Writer and SEO Dashboard feature docs
  - Comprehensive troubleshooting guide
- Configured responsive design with dark/light mode toggle
- Added search functionality and navigation
- Set up automatic deployment to GitHub Pages

The documentation site will be available at https://alwrity.github.io/ALwrity

.github/workflows/docs.yml

@@ -0,0 +1,62 @@
+name: Deploy Documentation
+
+on:
+  push:
+    branches: [main]
+    paths: ['docs/**', 'docs-site/**', 'mkdocs.yml']
+  pull_request:
+    branches: [main]
+    paths: ['docs/**', 'docs-site/**', 'mkdocs.yml']
+
+permissions:
+  contents: read
+  pages: write
+  id-token: write
+
+concurrency:
+  group: "pages"
+  cancel-in-progress: false
+
+jobs:
+  build:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+        with:
+          fetch-depth: 0
+
+      - name: Setup Python
+        uses: actions/setup-python@v4
+        with:
+          python-version: '3.10'
+
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install mkdocs mkdocs-material
+
+      - name: Setup Pages
+        uses: actions/configure-pages@v4
+
+      - name: Build documentation
+        run: |
+          cd docs-site
+          mkdocs build
+
+      - name: Upload artifact
+        uses: actions/upload-pages-artifact@v3
+        with:
+          path: docs-site/site
+
+  deploy:
+    environment:
+      name: github-pages
+      url: ${{ steps.deployment.outputs.page_url }}
+    runs-on: ubuntu-latest
+    needs: build
+    if: github.ref == 'refs/heads/main'
+    steps:
+      - name: Deploy to GitHub Pages
+        id: deployment
+        uses: actions/deploy-pages@v4