Added Toggle Option to Use the MLAPI Relay

- Also cleaned up and merged title screen files into a single class

Assets/Scripts/UI/Options/OptionsMenu.cs

@@ -0,0 +1,51 @@
+using System.Collections;
+using System.Collections.Generic;
+using MLAPI.Transports.UNET;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+using UnityEngine.UI;
+
+public class OptionsMenu : MonoBehaviour {
+
+    [SerializeField]
+    private Toggle useMLAPIRelayToggle;
+
+    void Start() {
+        // Set the current values for options
+
+        // ** Use MLAPI Relay
+        if (PlayerPrefs.GetInt("UseMLAPIRelay") == 0) {
+            useMLAPIRelayToggle.isOn = false;
+        } else {
+            useMLAPIRelayToggle.isOn = true;
+        }
+
+        // Add a listener to the toggle
+        useMLAPIRelayToggle.onValueChanged.AddListener((isSelected) => {
+            OnUseMLAPIRelayToggleChanged(isSelected);
+        });
+
+        // ** Other options here
+    }
+
+    private void OnUseMLAPIRelayToggleChanged(bool newState) {
+        Debug.Log("New value: " + newState);
+        if (newState) {
+            useMLAPIRelayToggle.isOn = true;
+            PlayerPrefs.SetInt("UseMLAPIRelay", 1);
+
+            // Don't forget to update the value on the network manager
+            GameObject.FindGameObjectWithTag("NetworkManager").GetComponent<UNetTransport>().UseMLAPIRelay = true;
+        } else {
+            useMLAPIRelayToggle.isOn = false;
+            PlayerPrefs.SetInt("UseMLAPIRelay", 0);
+
+            // Don't forget to update the value on the network manager
+            GameObject.FindGameObjectWithTag("NetworkManager").GetComponent<UNetTransport>().UseMLAPIRelay = false;
+        }
+    }
+
+    public void OnReturnToTitleClicked() {
+        SceneManager.LoadScene("TitleScene");
+    }
+}