some fixes

Author: SamuelBellomo

com.unity.netcode.gameobjects/Prototyping/Interpolator/BufferedLinearInterpolator.cs

@@ -62,8 +62,13 @@ public void OnEnable()
         {
         }
 
+        public void Awake()
+        {
+        }
+
         public void OnNetworkSpawn()
         {
+            Update(0);
         }
 
         private void TryConsumeFromBuffer()
@@ -172,4 +177,16 @@ public BufferedLinearInterpolatorFloat()
         {
         }
     }
+
+    public class BufferedLinearInterpolatorQuaternion : BufferedLinearInterpolator<Quaternion>
+    {
+        public override Quaternion Interpolate(Quaternion start, Quaternion end, float time)
+        {
+            return Quaternion.Slerp(start, end, time);
+        }
+
+        public BufferedLinearInterpolatorQuaternion()
+        {
+        }
+    }
 }

com.unity.netcode.gameobjects/Prototyping/Interpolator/IInterpolator.cs

@@ -4,6 +4,7 @@ namespace Unity.Netcode
 {
     public interface IInterpolator<T>
     {
+        public void Awake();
         public void OnNetworkSpawn();
         public void Start();
         public void OnEnable();

com.unity.netcode.gameobjects/Prototyping/Interpolator/SimpleInterpolator.cs

@@ -12,6 +12,11 @@ public class SimpleInterpolatorVector3 : IInterpolator<Vector3>
 
         private const float k_MaxLerpTime = 0.1f;
 
+        public void Awake()
+        {
+            Update(0);
+        }
+
         public void OnNetworkSpawn()
         {
         }