Added the UI to choose between login and registering

Author: Madhavan7

src/main/java/screens/user_registration_screen/LoginRegisterScreen.java

@@ -0,0 +1,39 @@
+package screens.user_registration_screen;
+
+import data_access.UserDatabase;
+import screens.login_screen.UserLoginUI;
+import screens.user_registration_screen.UserRegistrationUI;
+
+import javax.swing.*;
+import java.awt.event.ActionEvent;
+import java.awt.event.ActionListener;
+
+public class LoginRegisterScreen implements ActionListener {
+
+    JButton login = new JButton("login");
+    JButton register = new JButton("register");
+
+    public LoginRegisterScreen(){
+        JFrame loginRegFrame = new JFrame();
+        loginRegFrame.setDefaultCloseOperation(JFrame.DISPOSE_ON_CLOSE);
+        loginRegFrame.setSize(400, 200);
+        JPanel loginRegPanel = new JPanel();
+        loginRegFrame.add(loginRegPanel);
+        JLabel message = new JLabel("Do you want to Login or Register?");
+        message.setBounds(10, 30, 200, 25);
+        loginRegPanel.add(message);
+        login.setBounds(10, 60, 70, 30);
+        register.setBounds(110, 60, 70, 30);
+    }
+
+    @Override
+    public void actionPerformed(ActionEvent e) {
+        if(e.getSource().equals(login)){
+            UserLoginUI loginUI = new UserLoginUI(new UserDatabase());
+            loginUI.getLoginCredentials();
+        }else{
+            UserRegistrationUI registrationUI = new UserRegistrationUI(new UserDatabase());
+            registrationUI.GetUserCredentials();
+        }
+    }
+}