Restructure project to root layout

src/models/Product.ts

@@ -0,0 +1,12 @@
+export interface Product {
+  id: string;
+  name: string;
+  category: string;
+  unit_type: string;
+  bulk_name?: string;
+  units_per_bulk?: number;
+  barcode?: string;
+  archived: boolean;
+  created_at: number;
+  updated_at: number;
+}