DTOs for index mostly done, doing DB models

SVSim.EmulatedEntrypoint/Models/Dtos/ArenaInfo.cs

@@ -0,0 +1,24 @@
+using MessagePack;
+
+namespace SVSim.EmulatedEntrypoint.Models.Dtos;
+
+[MessagePackObject]
+public class ArenaInfo
+{
+    [Key("mode")]
+    public int Mode { get; set; }
+    [Key("enable")]
+    public int Enable { get; set; }
+    [Key("cost")]
+    public ulong Cost { get; set; }
+    [Key("rupy_cost")]
+    public ulong RupeeCost { get; set; }
+    [Key("ticket_cost")]
+    public int TicketCost { get; set; }
+    [Key("is_join")]
+    public bool IsJoin { get; set; }
+    [Key("sales_period_info")]
+    public ShopExpiryInfo? SalesPeriodInfo { get; set; }
+    [Key("format_info")]
+    public ArenaFormatInfo? FormatInfo { get; set; }
+}