Initial commit, basic proxying working

Myriad/Serialization/PermissionSetJsonConverter.cs

@@ -0,0 +1,24 @@
+using System;
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+using Myriad.Types;
+
+namespace Myriad.Serialization
+{
+    public class PermissionSetJsonConverter: JsonConverter<PermissionSet>
+    {
+        public override PermissionSet Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+        {
+            var str = reader.GetString();
+            if (str == null) return default;
+
+            return (PermissionSet) ulong.Parse(str);
+        }
+
+        public override void Write(Utf8JsonWriter writer, PermissionSet value, JsonSerializerOptions options)
+        {
+            writer.WriteStringValue(((ulong) value).ToString());
+        }
+    }
+}