Adds a CardPrice class

JpnCardsPokemon.Sdk/Api/CardPrice.cs

@@ -0,0 +1,17 @@
+using System;
+using System.Text.Json.Serialization;
+
+namespace JpnCardsPokemon.Sdk.Api;
+
+public class CardPrice
+{
+    public string Condition { get; set; }
+
+    [JsonPropertyName("priceAmount")] public decimal Price { get; set; }
+
+    [JsonPropertyName("priceCurrency")] public string Currency { get; set; }
+
+    [JsonPropertyName("dateUpdated")] public DateTime? UpdatedDate { get; set; }
+
+    public string? ListingUrl { get; set; }
+}