Added pause menu

Pause menu with settings

3D FPS/Assets/Scripts/PauseScreen.cs

@@ -0,0 +1,42 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+
+public class PauseScreen : MonoBehaviour
+{
+    public GameObject pauseMenu;
+    public GameObject settingsMenu;
+    void Update()
+    {
+        if(Input.GetKeyDown(KeyCode.Escape))
+        {
+            Cursor.lockState = CursorLockMode.None;
+            Time.timeScale = 0;
+            pauseMenu.SetActive(true);
+        }
+    }
+
+    public void RestartButtonn()
+    {
+        Time.timeScale = 1;
+        SceneManager.LoadScene("SampleScene");
+    }  
+
+    public void ExitButtonn()
+    {
+        Application.Quit();
+    }
+
+    public void ContinueButtonn()
+    {
+        Time.timeScale = 1;
+        pauseMenu.SetActive(false);
+        Cursor.lockState = CursorLockMode.Locked;
+    }
+
+    public void SettingButtonn()
+    {
+        settingsMenu.SetActive(true);
+    }
+}