folder structure changes

lib/core/constants/strings.dart

@@ -24,7 +24,6 @@ class AppStrings {
 
   //Home
   static const String home = 'Home';
-
   static const String partnership = 'Partnership';
   static const String selfApply = 'Self-apply';
   static const String contracting = 'Contracting';

lib/core/utils/size_config.dart

@@ -0,0 +1,31 @@
+import 'package:flutter/material.dart';
+
+class SizeConfig {
+  static double screenWidth = 0.0;
+  static double screenHeight = 0.0;
+  static late TextScaler textScaler;
+
+  static void init(BuildContext context) {
+    screenWidth = MediaQuery.sizeOf(context).width;
+    screenHeight = MediaQuery.sizeOf(context).height;
+    textScaler = MediaQuery.of(context).textScaler;
+  }
+}
+
+extension SizeDoubleExt on double {
+  double h() {
+    final double screenHeight = SizeConfig.screenHeight;
+    final double res = (this / 917.0) * screenHeight;
+    return res;
+  }
+
+  double w() {
+    final double screenWidth = SizeConfig.screenWidth;
+    final double res = (this / 412.0) * screenWidth;
+    return res;
+  }
+
+  double sp() {
+    return h();
+  }
+}