Implemented DLSiteClient.

JSMR.Infrastructure/Integrations/DLSite/Serialization/DateTimeConverterUsingDateTimeParse.cs

@@ -0,0 +1,17 @@
+using System.Text.Json;
+using System.Text.Json.Serialization;
+
+namespace JSMR.Infrastructure.Integrations.DLSite.Serialization;
+
+public class DateTimeConverterUsingDateTimeParse : JsonConverter<DateTime>
+{
+    public override DateTime Read(ref Utf8JsonReader reader, Type typeToConvert, JsonSerializerOptions options)
+    {
+        return DateTime.Parse(reader.GetString() ?? string.Empty);
+    }
+
+    public override void Write(Utf8JsonWriter writer, DateTime value, JsonSerializerOptions options)
+    {
+        writer.WriteStringValue(value.ToString() ?? string.Empty);
+    }
+}