Set ExecutionState to waiting after finished

Tranga/TrangaTask.cs

@@ -5,7 +5,7 @@ using Tranga.TrangaTasks;
 namespace Tranga;
 
 /// <summary>
-/// Stores information on Task
+/// Stores information on Task, when implementing new Tasks also update the serializer
 /// </summary>
 public abstract class TrangaTask
 {
@@ -80,6 +80,13 @@ public abstract class TrangaTask
 
         public override bool CanWrite => false;
 
+        /// <summary>
+        /// Don't call this
+        /// </summary>
+        /// <param name="writer"></param>
+        /// <param name="value"></param>
+        /// <param name="serializer"></param>
+        /// <exception cref="Exception"></exception>
         public override void WriteJson(JsonWriter writer, object? value, JsonSerializer serializer)
         {
             throw new Exception("Dont call this");

Tranga/TrangaTasks/DownloadNewChaptersTask.cs

@@ -24,6 +24,8 @@ public class DownloadNewChaptersTask : TrangaTask
 
         foreach(Chapter newChapter in newChapters)
             connector.DownloadChapter(pub, newChapter);
+
+        this.state = ExecutionState.Waiting;
     }
     
     /// <summary>

Tranga/TrangaTasks/UpdateKomgaLibraryTask.cs

@@ -16,5 +16,6 @@ public class UpdateKomgaLibraryTask : TrangaTask
         Komga.KomgaLibrary[] allLibraries = komga.GetLibraries();
         foreach (Komga.KomgaLibrary lib in allLibraries)
             komga.UpdateLibrary(lib.id);
+        this.state = ExecutionState.Waiting;
     }
 }