use new system via an update info

ModpackUpdater/UpdateInfos.vb

@@ -0,0 +1,11 @@
+Imports Newtonsoft.Json.Linq
+
+Public Class UpdateInfos
+
+    Public ReadOnly Property Updates As New List(Of UpdateInfo)
+
+    Public Shared Function Parse(content As String) As UpdateInfos
+        Return JObject.Parse(content).ToObject(Of UpdateInfos)
+    End Function
+
+End Class