Practice/deck editing mostly there

SVSim.EmulatedEntrypoint/Models/Dtos/Requests/ConfigUpdatePrizePreferredRequest.cs

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+using MessagePack;
+using System.Text.Json.Serialization;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos.Requests;
+
+[MessagePackObject]
+public class ConfigUpdatePrizePreferredRequest : BaseRequest
+{
+    [JsonPropertyName("is_prize_preferred")]
+    [Key("is_prize_preferred")]
+    public int IsPrizePreferred { get; set; }
+}