feat: Update app icons and manifest for improved branding and localization support

- Changed AndroidManifest.xml to use new launcher icon.
- Added new launcher icon images for various resolutions in Android mipmap directories.
- Updated iOS project.pbxproj and Info.plist to version 13.
- Refactored iOS AppIcon asset catalog with new icon sizes and updated Contents.json.
- Modified pubspec.yaml to include flutter_launcher_icons for automatic icon generation.
- Updated web manifest colors for better branding.
- Added new favicon and icon images for web support.

pubspec.yaml

@@ -86,9 +86,25 @@ dev_dependencies:
   # package. See that file for information about deactivating specific lint
   # rules and activating additional ones.
   flutter_lints: ^6.0.0
+  flutter_launcher_icons: "^0.14.4"
 
-# For information on the generic Dart part of this file, see the
-# following page: https://dart.dev/tools/pub/pubspec
+flutter_launcher_icons:
+  android: "launcher_icon"
+  ios: true
+  image_path: "icon.png"
+  min_sdk_android: 21 # android min sdk min:16, default 21
+  web:
+    generate: true
+    image_path: "icon.png"
+    background_color: "#ddd" # background color for web icon, default white
+    theme_color: "#fff" # theme color for web icon, default white
+  windows:
+    generate: true
+    image_path: "icon.png"
+    icon_size: 48 # min:48, max:256, default: 48
+  macos:
+    generate: true
+    image_path: "icon.png"
 
 # The following section is specific to Flutter packages.
 flutter:
@@ -100,7 +116,6 @@ flutter:
 
   # Enable generation of localization files
   generate: true
-
   # To add assets to your application, add an assets section, like this:
   # assets:
   #   - images/a_dot_burr.jpeg