backport of public nsfw module

src/NadekoBot/Modules/Nsfw/Common/SankakuImageObject.cs

@@ -0,0 +1,27 @@
+using System.Linq;
+using System.Text.Json.Serialization;
+
+namespace NadekoBot.Modules.Nsfw.Common
+{
+    public class SankakuImageObject : IImageData
+    {
+        public class Tag
+        {
+            public string Name { get; set; }
+        }
+        
+        [JsonPropertyName("file_url")]
+        public string FileUrl { get; set; }
+        
+        [JsonPropertyName("file_type")]
+        public string FileType { get; set; }
+        
+        public Tag[] Tags { get; set; }
+        
+        [JsonPropertyName("total_score")]
+        public int Score { get; set; }
+
+        public ImageData ToCachedImageData(Nsfw.Common.Booru type)
+            => new(FileUrl, Nsfw.Common.Booru.Sankaku, Tags.Select(x => x.Name).ToArray(), Score.ToString());
+    }
+}