Add option to export Live2D Cubism models

AssetStudioUtility/CubismLive2DExtractor/MyJsonConverter.cs

@@ -0,0 +1,35 @@
+using Newtonsoft.Json;
+using System;
+using System.Collections.Generic;
+
+namespace CubismLive2DExtractor
+{
+    public class MyJsonConverter : JsonConverter
+    {
+        public override bool CanConvert(Type objectType)
+        {
+            return objectType == typeof(List<float>);
+        }
+
+        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.WriteStartArray();
+            Convert(writer, (List<float>)value);
+            writer.WriteEndArray();
+        }
+
+        private void Convert(JsonWriter writer, List<float> array)
+        {
+            foreach (var n in array)
+            {
+                var v = n.ToString("0.###", System.Globalization.CultureInfo.InvariantCulture);
+                writer.WriteRawValue(v);
+            }
+        }
+    }
+}