Add API documentation access and improve docs integration

✅ Enhanced API Documentation Access:
- Added /docs route to main app with instructions for Swagger UI
- Created helpful documentation page with setup instructions
- Added API Documentation button to web interface
- Updated /api endpoint to include Swagger UI information

✅ User-Friendly Documentation:
- Clear step-by-step instructions to access Swagger UI
- Direct link to Swagger UI (when running)
- Quick API reference on docs page
- Professional styling for documentation page

✅ Improved Navigation:
- Added 'API Documentation' button to main interface
- Opens in new tab for easy reference
- Back link to main interface
- Clear visual hierarchy and instructions

Now users can easily access API documentation from the main interface

templates/index.html

@@ -39,6 +39,9 @@
                     <button class="btn btn-info" onclick="runAllTests()">
                         <i class="fas fa-play"></i> Run All Tests
                     </button>
+                    <a href="/docs" class="btn btn-outline" target="_blank">
+                        <i class="fas fa-book"></i> API Documentation
+                    </a>
                 </div>
             </section>