Add json serialization configs

src/Tribufu.Serialization/BaseClassFirstContractResolver.cs

@@ -0,0 +1,20 @@
+// Copyright (c) Tribufu. All Rights Reserved.
+// SPDX-License-Identifier: UNLICENSED
+
+using Newtonsoft.Json;
+using Newtonsoft.Json.Serialization;
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace Tribufu.Serialization
+{
+    public class BaseClassFirstContractResolver : DefaultContractResolver
+    {
+        protected override IList<JsonProperty> CreateProperties(Type type, MemberSerialization memberSerialization)
+        {
+            var props = base.CreateProperties(type, memberSerialization);
+            return props.OrderBy(p => { return p.DeclaringType == type ? 1 : 0; }).ToList();
+        }
+    }
+}

src/Tribufu.Serialization/SerializationConfiguration.cs

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+// Copyright (c) Tribufu. All Rights Reserved.
+// SPDX-License-Identifier: MIT
+
+using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
+using Newtonsoft.Json.Serialization;
+
+namespace Tribufu.Serialization
+{
+    public static class SerializationConfiguration
+    {
+        public static JsonSerializerSettings GetNewtonsoftJsonSerializerSettings()
+        {
+            var settings = new JsonSerializerSettings
+            {
+                ContractResolver = new BaseClassFirstContractResolver
+                {
+                    NamingStrategy = new SnakeCaseNamingStrategy()
+                },
+            };
+
+            settings.Converters.Add(new DecimalNullableStringConverter());
+            settings.Converters.Add(new DecimalStringConverter());
+            settings.Converters.Add(new ULongNullableStringConverter());
+            settings.Converters.Add(new ULongStringConverter());
+            settings.Converters.Add(new StringEnumConverter(new SnakeCaseNamingStrategy(), false));
+
+            settings.ReferenceLoopHandling = ReferenceLoopHandling.Ignore;
+
+            return settings;
+        }
+    }
+}