feat(Layout): add favicon and logo asset

- Linked a new SVG favicon in the Layout component for better branding.
- Added the corresponding logo.svg file to the public directory.

src/components/Layout.astro

@@ -15,6 +15,7 @@ import "../styles/index.css"
 
 		<meta charset="UTF-8" />
 		<meta name="viewport" content="width=device-width, initial-scale=1.0" />
+		<link rel="icon" type="image/svg+xml" href="/logo.svg" />
 		<title>Gallus Pub</title>
 	</head>