Added converter to improve object serialization

src/ElectronNET.API/Converter/PageSizeConverter.cs

@@ -0,0 +1,43 @@
+using ElectronNET.API.Entities;
+using Newtonsoft.Json;
+using System;
+
+namespace ElectronNET.Converter;
+
+public class PageSizeConverter : JsonConverter<PageSize>
+{
+    public override PageSize ReadJson(JsonReader reader, Type objectType, PageSize existingValue, bool hasExistingValue, JsonSerializer serializer)
+    {
+        if (reader.TokenType == JsonToken.String)
+        {
+            return (string)reader.Value;
+        }
+        else if (reader.TokenType == JsonToken.StartObject)
+        {
+            return serializer.Deserialize<PageSize>(reader);
+        }
+        else
+        {
+            throw new JsonSerializationException("Invalid value for PageSize. Expected true, false, or an object.");
+        }
+    }
+
+    public override void WriteJson(JsonWriter writer, PageSize value, JsonSerializer serializer)
+    {
+        if (value is null)
+        {
+            writer.WriteUndefined();
+        }
+
+        var str = (string)value;
+
+        if (str is not null)
+        {
+            writer.WriteValue(str);
+        }
+        else
+        {
+            serializer.Serialize(writer, value);
+        }
+    }
+}