adding saving to Datapacks and datasets

SessionZero/Data/DatasetMetadata.cs

@@ -1,3 +1,5 @@
+using System.Text.Json;
+
 namespace SessionZero.Data;
 
 public class DatasetMetadata
@@ -6,6 +8,11 @@ public class DatasetMetadata
     public required string Id  { get; set; }
     public required string Description { get; set; }
     public required string DatasetType { get; set; }
-    public required string Icon { get; set; }
-    public required string ObjectTemplate { get; set; }
+    public string Icon { get; set; }
+    public required string ObjectTemplateId { get; set; }
+
+    public override string ToString()
+    {
+        return JsonSerializer.Serialize(this,  new JsonSerializerOptions { WriteIndented = true });
+    }
 }