Added custom ErrorResponse class

Author: manavpatnaik

utils/ErrorResponse.js

@@ -0,0 +1,10 @@
+class ErrorResponse extends Error {
+  constructor(message, statusCode) {
+    super(message);
+    this.statusCode = statusCode;
+
+    Error.captureStackTrace(this, this.constructor);
+  }
+}
+
+module.exports = ErrorResponse;