Add initial UI Toolkit setup and schemas

Assets/SimpleRuntimeUI.cs

@@ -0,0 +1,32 @@
+using System;
+using UnityEngine;
+using UnityEngine.Serialization;
+using UnityEngine.UIElements;
+
+public class SimpleRuntimeUI : MonoBehaviour
+{
+    private Label _forceLabel;
+    private Label _timeScaleLabel;
+    
+    [SerializeField]
+    private TestScript testScript;
+
+    private void OnEnable()
+    {
+        var uiDocument = GetComponent<UIDocument>();
+
+        _forceLabel = uiDocument.rootVisualElement.Q<Label>("forceLabel");
+        _timeScaleLabel = uiDocument.rootVisualElement.Q<Label>("timeScaleLabel");
+    }
+
+    private void Start()
+    {
+        _forceLabel.text = "Hello World";
+    }
+
+    private void Update()
+    {
+        _forceLabel.text = testScript.GetTorqueForce().ToString();
+        _timeScaleLabel.text = Time.timeScale.ToString();
+    }
+}