Missing files + start working on offline patcher

SafeExamBrowser.Core/ResponsibilityModel/ResponsibilityCollection.cs

@@ -0,0 +1,46 @@
+/*
+ * Copyright (c) 2025 ETH Zürich, IT Services
+ * 
+ * This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/.
+ */
+
+using System;
+using System.Collections.Generic;
+using SafeExamBrowser.Core.Contracts.ResponsibilityModel;
+using SafeExamBrowser.Logging.Contracts;
+
+namespace SafeExamBrowser.Core.ResponsibilityModel
+{
+	/// <summary>
+	/// Default implementation of the <see cref="IResponsibilityCollection{T}"/>.
+	/// </summary>
+	/// <typeparam name="T"></typeparam>
+	public class ResponsibilityCollection<T> : IResponsibilityCollection<T>
+	{
+		protected ILogger logger;
+		protected Queue<IResponsibility<T>> responsibilities;
+
+		public ResponsibilityCollection(ILogger logger, IEnumerable<IResponsibility<T>> responsibilities)
+		{
+			this.logger = logger;
+			this.responsibilities = new Queue<IResponsibility<T>>(responsibilities);
+		}
+
+		public void Delegate(T task)
+		{
+			foreach (var responsibility in responsibilities)
+			{
+				try
+				{
+					responsibility.Assume(task);
+				}
+				catch (Exception e)
+				{
+					logger.Error($"Caught unexpected exception while '{responsibility.GetType().Name}' was assuming task '{task}'!", e);
+				}
+			}
+		}
+	}
+}