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/services/SMSClient/SMSAPI.ts

@@ -0,0 +1,13 @@
+import SMSClientInterface from '@/services/SMSClient/SMSClientInterface';
+
+export default class SMSAPI {
+  smsClient: SMSClientInterface;
+
+  constructor(smsClient: SMSClientInterface){
+    this.smsClient = smsClient;
+  }
+
+  sendMessage(to: string, message: string, extraParams: [], extraHeaders: []) {
+    return this.smsClient.send(to, message);
+  }
+}