feat: add favicon support with SVG response and update templates and tests

- Implemented a `favicon` view to serve a custom SVG favicon
- Added `favicon.ico` route to `urls.py`
- Updated `base.html` to include favicon link tag
- Suppressed specific Django ASGI warnings in DEBUG mode
- Added unit tests to verify favicon behavior and response

templates/_layouts/base.html

@@ -5,6 +5,7 @@
     <meta charset="UTF-8">
     <meta name="viewport" content="width=device-width, initial-scale=1.0">
     <title>Santehray - {% block title %}{{ title }}{% endblock %}</title>
+    <link rel="icon" type="image/svg+xml" href="{% url 'favicon' %}">
     <link rel="preconnect" href="https://fonts.googleapis.com">
     <link rel="preconnect" href="https://fonts.gstatic.com" crossorigin>
     <link href="https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,100..900;1,14..32,100..900&display=swap"