feat: starter kit.

lib/utils/extensions/build_context.dart

@@ -0,0 +1,24 @@
+import 'package:flutter/material.dart';
+
+/// Extension on [BuildContext] to provide easy access to media query properties.
+extension MediaQueryExtensions on BuildContext {
+  /// Returns `true` if the device width is greater than 768 pixels.
+  bool get isLargeScreen => MediaQuery.of(this).size.width > 768;
+
+  bool get isExtraWideScreen => MediaQuery.of(this).size.width > 1024;
+
+  /// Returns `true` if the device width is 768 pixels or less.
+  bool get isMobile => !isLargeScreen;
+
+  /// Returns a scaled width factor based on the screen size.
+  double widthFactor({
+    required double mobileFactor,
+    required double largeScreenFactor,
+  }) {
+    return MediaQuery.of(this).size.width *
+        (isMobile ? mobileFactor : largeScreenFactor);
+  }
+}
+
+
+