feat : customer can set User Name

feat : customer can update username.
wip : update the SMS template for user name.

src/controllers/otp.controller.js

@@ -21,6 +21,7 @@ async function SendOtp(req, res) {
     ref,
     date,
     userOtp,
+    PreferName,
   } = req.body;
 
   if (!mobileNumber || !type) {
@@ -99,6 +100,13 @@ async function SendOtp(req, res) {
         otp = generateOTP(6);
         message = templates.EMandate(otp);
         break;
+      case 'USERNAME_UPDATED':
+        otp = generateOTP(6);
+        message = templates.USERNAME_UPDATED(otp);
+        break;
+      case 'USERNAME_SAVED':
+        message = templates.USERNAME_SAVED(PreferName);
+        break;
       default:
         return res.status(400).json({ error: 'Invalid OTP type' });
     }