Update to new structure

src/app/demo/api/customer.ts

@@ -0,0 +1,20 @@
+export interface Country {
+    name?: string;
+    code?: string;
+}
+
+export interface Representative {
+    name?: string;
+    image?: string;
+}
+
+export interface Customer {
+    id?: number;
+    name?: string;
+    country?: Country;
+    company?: string;
+    date?: string;
+    status?: string;
+    activity?: number;
+    representative?: Representative;
+}

src/app/demo/api/image.ts

@@ -0,0 +1,6 @@
+export interface Image {
+    previewImageSrc?:any;
+    thumbnailImageSrc?:any;
+    alt?:any;
+    title?:any;
+}

src/app/demo/api/product.ts

@@ -0,0 +1,12 @@
+export interface Product {
+    id?: string;
+    code?: string;
+    name?: string;
+    description?: string;
+    price?: number;
+    quantity?: number;
+    inventoryStatus?: any;
+    category?: string;
+    image?: string;
+    rating?: number;
+}