Json Byte Arrays Serialized as Hex (#8)

* Serialize byte arrays as hex

* Fix namespace

* Small fix

---------

Co-authored-by: John Detter <[email protected]>

Author: jdetter

sdks/csharp/Assets/SpacetimeDB/Scripts/ByteArrayConverter.cs

@@ -0,0 +1,23 @@
+using System;
+using Newtonsoft.Json;
+
+namespace SpacetimeDB
+{
+    public class ByteArrayConverter : JsonConverter
+    {
+        public override bool CanConvert(Type objectType)
+        {
+            return objectType == typeof(byte[]);
+        }
+        
+        public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
+        {
+            throw new NotImplementedException();
+        }
+
+        public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
+        {
+            writer.WriteValue(BitConverter.ToString((byte[])value).Replace("-",""););
+        }
+    }
+}