Update products

MainAppDMT/lib/models/product.dart

+class Product {
+  final int id, price;
+  final String title, description, image;
+
+  Product({this.id, this.price, this.title, this.description, this.image});
+}
+
+// list of products
+// for our demo
+List<Product> products = [
+  Product(
+    id: 1,
+    price: 20,
+    title: "Draw Man Test",
+    image: "assets/images/test2.png",
+    description:
+        "The Draw-a-Person test is a psychological projective personality or cognitive test used to evaluate children and adolescents for a variety of purposes",
+  ),
+  Product(
+    id: 4,
+    price: 15,
+    title: "Shape Test",
+    image: "assets/images/test1.png",
+    description:
+        "The Shape identification test is a psychological projective personality or cognitive test used to evaluate children and adolescents for a variety of purposes",
+  ),
+  Product(
+    id: 9,
+    price: 30,
+    title: "Arithmatic Test",
+    image: "assets/images/test3.png",
+    description:
+        "The Arithmatic Test is a psychological projective personality or cognitive test used to evaluate children and adolescents for a variety of purposes",
+  ),
+  Product(
+    id: 29,
+    price: 30,
+    title: "Number Cancellation Test",
+    image: "assets/images/test4.png",
+    description:
+        "The Number Cancellation Test is a psychological projective personality or cognitive test used to evaluate children and adolescents for a variety of purposes",
+  ),
+];