Add MkDocs documentation portal with Material theme and CI/CD workflow

Co-authored-by: Fu-Jie <33599649+Fu-Jie@users.noreply.github.com>

docs/enhancements/index.md

@@ -0,0 +1,59 @@
+# Enhancements
+
+Tips, tricks, and advanced configurations to optimize your OpenWebUI experience.
+
+---
+
+## Enhancement Categories
+
+<div class="grid cards" markdown>
+
+-   :material-tune:{ .lg .middle } **Optimization Guide**
+
+    ---
+
+    Learn how to optimize OpenWebUI for better performance, customization, and workflows.
+
+    [:octicons-arrow-right-24: View Guide](guide.md)
+
+-   :material-puzzle:{ .lg .middle } **Plugin Integration**
+
+    ---
+
+    Best practices for combining multiple plugins effectively.
+
+    [:octicons-arrow-right-24: Browse Plugins](../plugins/index.md)
+
+</div>
+
+---
+
+## Quick Tips
+
+### Performance
+
+- :material-speedometer: Enable caching for frequently used models
+- :material-memory: Optimize context window usage with compression filters
+- :material-lightning-bolt: Use streaming for faster perceived response times
+
+### Customization
+
+- :material-palette: Customize themes and appearance
+- :material-keyboard: Set up keyboard shortcuts
+- :material-cog: Configure default model settings
+
+### Workflow
+
+- :material-robot: Create custom prompts for repeated tasks
+- :material-filter: Use filters for consistent formatting
+- :material-export: Set up export workflows for documentation
+
+---
+
+## Featured Guides
+
+| Guide | Description |
+|-------|-------------|
+| [Complete Optimization Guide](guide.md) | Comprehensive tips for better OpenWebUI usage |
+| [Plugin Development](../development/index.md) | Create your own plugins |
+| [Prompt Engineering](../prompts/library.md) | Master the art of prompting |