feat(icons): add favicon images and web manifest for application

- Added favicon images in 16x16 and 32x32 sizes
- Introduced favicon.ico for broader browser compatibility
- Created site.webmanifest for PWA support with app icons and colors

Author: ten24bytes

android-chrome-192x192.png

@@ -15,6 +15,14 @@
 
     <title>CodeSphere - Online Coding Classes for Grades 3-12</title>
 
+    <!-- Favicon -->
+    <link rel="icon" type="image/x-icon" href="/favicon.ico">
+    <link rel="icon" type="image/png" sizes="32x32" href="/favicon-32x32.png">
+    <link rel="icon" type="image/png" sizes="16x16" href="/favicon-16x16.png">
+    <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png">
+    <link rel="manifest" href="/site.webmanifest">
+    <meta name="theme-color" content="#f5a425">
+
     <!-- Bootstrap core CSS -->
     <link href="vendor/bootstrap/css/bootstrap.min.css" rel="stylesheet" />
 

android-chrome-512x512.png

@@ -0,0 +1,19 @@
+{
+  "name": "CodeSphere",
+  "short_name": "CodeSphere",
+  "icons": [
+    {
+      "src": "/android-chrome-192x192.png",
+      "sizes": "192x192",
+      "type": "image/png"
+    },
+    {
+      "src": "/android-chrome-512x512.png",
+      "sizes": "512x512",
+      "type": "image/png"
+    }
+  ],
+  "theme_color": "#f5a425",
+  "background_color": "#ffffff",
+  "display": "standalone"
+}