feat: Payment system with voucher cards.

feat: Design with inversion dependency injection architecture.
feat: Prettier http middleware.
feat: Re-write items categories with preferred accounts.

server/src/interfaces/Item.ts

@@ -0,0 +1,7 @@
+
+
+export interface IItem{
+  id: number,
+  name: string,
+  type: string,
+}