make list

ModpackUpdater/UpdateAction.cs

@@ -1,12 +1,21 @@
 using Newtonsoft.Json;
 using Newtonsoft.Json.Converters;
+using System.ComponentModel;
 
 namespace ModpackUpdater;
 
 public class UpdateAction : InstallAction
 {
     [JsonConverter(typeof(StringEnumConverter))]
+    [DefaultValue(UpdateActionType.Update)]
     public UpdateActionType Type { get; set; }
+
+    [DefaultValue(null)]
     public string SrcPath { get; set; }
+
+    [DefaultValue(false)]
     public bool IsDirectory { get; set; }
+
+    [DefaultValue(null)]
+    public string InheritFrom { get; set; }
 }