feat: add document templates library with 10 templates

src/templates/tutorial.md

@@ -0,0 +1,71 @@
+# Tutorial: [Topic Name]
+
+**Date:** {{DATE}}
+**Difficulty:** Beginner / Intermediate / Advanced
+**Time:** ~30 minutes
+
+## Prerequisites
+
+- Prerequisite 1
+- Prerequisite 2
+
+## What You Will Learn
+
+- Learning objective 1
+- Learning objective 2
+
+## Step 1: Getting Started
+
+Description of the first step.
+
+```bash
+# Example command
+echo "Hello, World!"
+```
+
+## Step 2: Core Concepts
+
+Explain the main concepts here.
+
+### Key Concept A
+
+Details about concept A.
+
+### Key Concept B
+
+Details about concept B.
+
+## Step 3: Building the Feature
+
+Walk through the implementation.
+
+```javascript
+// Example code
+function example() {
+    return 'Hello';
+}
+```
+
+## Step 4: Testing
+
+How to verify everything works.
+
+## Common Issues
+
+### Issue 1
+**Problem:** Description of the problem.
+**Solution:** How to fix it.
+
+### Issue 2
+**Problem:** Description of the problem.
+**Solution:** How to fix it.
+
+## Next Steps
+
+- Suggested follow-up 1
+- Suggested follow-up 2
+
+## Resources
+
+- [Resource 1](https://example.com)
+- [Resource 2](https://example.com)