User service added login and returning token

buisnesslogic/src/main/java/com/plannaplan/exceptions/UserNotFoundException.java

@@ -0,0 +1,13 @@
+package com.plannaplan.exceptions;
+
+public class UserNotFoundException extends Exception {
+    /**
+     *
+     */
+    private static final long serialVersionUID = 1L;
+
+    public UserNotFoundException(String message) {
+        super(message);
+    }
+
+}