Add authentication once again

assets/pages/index.html

@@ -105,13 +105,16 @@
                 token: token
             };
 
+            let creds = JSON.parse(localStorage.getItem("creds"));
+
             await fetch("/payment", {
-                    method: "POST",
-                    headers: {
-                        "Content-Type": "application/json"
-                    },
-                    body: JSON.stringify(dataToken)
-                })
+                method: "POST",
+                headers: {
+                    "Content-Type": "application/json",
+                    "Authorization": `Basic ${creds.username}:${creds.password}`
+                },
+                body: JSON.stringify(dataToken)
+            })
                 .then(response => {
                     if (response.ok) {
                         document.getElementById("paymentAccepted").style.display = 'block';