Adds price data enumerable to the card API object

JpnCardsPokemon.Sdk/Api/Card.cs

@@ -1,4 +1,6 @@
-using System.Text.Json.Serialization;
+using System.Collections.Generic;
+using System.Text.Json.Serialization;
+using JpnCardsPokemon.Sdk.Utils.JsonConverter;
 
 namespace JpnCardsPokemon.Sdk.Api;
 
@@ -30,6 +32,9 @@ public class Card
     // TODO: Type of property is not documented. Has to be evaluated at a later time.
     // public Resistance[]? Ressistences { get; set; }
 
+    [JsonConverter(typeof(CardPriceConverter))]
+    public IEnumerable<CardPrice>? Prices { get; set; }
+
     [JsonPropertyName("retreatCost")] public string[]? RetreatCosts { get; set; }
 
     public int? ConvertedRetreatCost { get; set; }