Adds basic classes for card and set

Covers most of the properties documented at https://jpn-cards-site.readthedocs.io/en/latest/api_docs/pokemon/v2/v2_obj/
Properties which consist of undocumented objects currently are not implemented.

src/Api/Card.cs

@@ -0,0 +1,53 @@
+namespace JpnCardsPokemonSdk.Api;
+
+public class Card
+{
+    public string Name { get; set; }
+
+    public int Id { get; set; }
+
+    public Set? Set { get; set; }
+
+    public string[] Types { get; set; }
+
+    public int Hp { get; set; } = -1;
+
+    public string? EvolvesFrom { get; set; }
+
+    // TODO: Type of property is not documented. Has to be evaluated at a later time.
+    // public Effect? Effect { get; set; }
+
+    // TODO: Type of property is not documented. Has to be evaluated at a later time.
+    // public Attack[]? Attacks { get; set; }
+
+    public string[]? Rules { get; set; }
+
+    // TODO: Type of property is not documented. Has to be evaluated at a later time.
+    // public Weakness[]? Weaknesses { get; set; }
+
+    // TODO: Type of property is not documented. Has to be evaluated at a later time.
+    // public Resistance[]? Ressistences { get; set; }
+
+    public string[]? RetreatCosts { get; set; }
+
+    public int? ConvertedRetreadCost { get; set; }
+
+    public string Supertype { get; set; }
+
+    public string[]? Subtypes { get; set; }
+
+    public string Rarity { get; set; }
+
+    // TODO: Type of property is not documented. Has to be evaluated at a later time.
+    // public Legality[]? Legalities { get; set; }
+
+    public string? ImageUrl { get; set; }
+
+    public string? CardUrl { get; set; }
+
+    public int Number { get; set; }
+
+    public string PrintedNumber { get; set; }
+
+    public int Uuid { get; set; }
+}

src/Api/Set.cs

@@ -0,0 +1,27 @@
+namespace JpnCardsPokemonSdk.Api;
+
+public class Set
+{
+    public string Name { get; set; }
+
+    public int Id { get; set; }
+
+    public string? SourceUrl { get; set; }
+
+    public string? ImageUrl { get; set; }
+
+    public string Language { get; set; }
+
+    public int Year { get; set; }
+
+    // TODO: According to documentation the property currently is not supported.
+    // public DateOnly? Date { get; set; }
+
+    public int TotalCardCount { get; set; }
+
+    public int PrintedCardCount { get; set; }
+
+    public string SetCode { get; set; }
+
+    public int Uuid { get; set; }
+}