add modloader to modpackconfig

ModpackUpdater/ModpackConfig.cs

@@ -1,17 +1,29 @@
 using Newtonsoft.Json;
+using Newtonsoft.Json.Converters;
 
 namespace ModpackUpdater;
 
 public class ModpackConfig
 {
     public bool Maintenance { get; set; }
+
     public string Name { get; set; }
+
     public string UpdateUrl { get; set; }
+
     public string InstallUrl { get; set; }
+
     public string UnleashApiUrl { get; set; }
+
     public string UnleashInstanceId { get; set; }
+
     public bool PreferDirectLinks { get; set; }
 
+    public string MinecraftVersion { get; set; }
+
+    [JsonConverter(typeof(StringEnumConverter))]
+    public ModLoader ModLoader { get; set; }
+
     [JsonIgnore]
     public string ConfigUrl { get; set; }