feat: add DTOs for basic endpoints

DTOs/AlbumList2DTO.cs

@@ -0,0 +1,11 @@
+using System.Text.Json.Serialization;
+using System.Xml.Serialization;
+
+namespace Shadow.DTOs;
+
+public class AlbumList2DTO
+{
+	[JsonPropertyName("album")]
+	[JsonIgnore(Condition = JsonIgnoreCondition.WhenWritingNull)]
+	public List<AlbumViewShortDTO>? album { get; set; } = null;
+}