Invoices can be created

- Transactions can now be tracked

src/routes/invoice.ts

@@ -1,8 +1,9 @@
 import { Router } from "express";
+import { createInvoice } from "../controllers/invoice";
 
 const invoiceRouter = Router()
 
 invoiceRouter.get('/:id');
-invoiceRouter.post('/');
+invoiceRouter.post('/', createInvoice);
 
 export { invoiceRouter };