multiplayer refactor

Runtime/Engine/Code/Extensions/NativeArrayEx.cs

@@ -0,0 +1,19 @@
+using System.Text;
+using Unity.Collections;
+
+namespace RebootKit.Engine.Extensions {
+    public static class NativeArrayEx {
+        public static string ToHexString(this NativeArray<byte> array) {
+            if (array.IsCreated) {
+                StringBuilder sb = new StringBuilder(array.Length * 3);
+                for (int i = 0; i < array.Length; i++) {
+                    sb.AppendFormat("{0:X2} ", array[i]);
+                }
+
+                return sb.ToString();
+            }
+            return string.Empty;
+        }
+        
+    }
+}