add package files

com.htc.upm.vive.openxr/OpenXRFacialTracking/Samples~/Scripts/FollowCamera.cs

@@ -0,0 +1,22 @@
+using UnityEngine;
+
+namespace VIVE.FacialTracking.Sample
+{
+    public class FollowCamera : MonoBehaviour
+    {
+        // Start is called before the first frame update
+        public new Transform camera;
+        private Vector3 offset;
+        void Start()
+        {
+            this.transform.position = new Vector3(camera.position.x, camera.position.y, camera.position.z + 1);
+        }
+
+        // Update is called once per frame
+        void Update()
+        {
+            this.transform.position = new Vector3(this.transform.position.x, camera.position.y, this.transform.position.z);
+        }
+    }
+}
+