Added FileLogger to collection, some CI changes

- Building within one container
- Updated UnitTest references
- Extending DebugLocal

AMWD.Common/Logging/NullScope.cs

@@ -0,0 +1,25 @@
+using System;
+
+namespace AMWD.Common.Logging
+{
+	/// <summary>
+	/// An empty scope without any logic.
+	/// </summary>
+	[System.Diagnostics.CodeAnalysis.ExcludeFromCodeCoverage]
+	internal class NullScope : IDisposable
+	{
+		/// <summary>
+		/// The <see cref="NullScope"/> instance to use.
+		/// </summary>
+		public static NullScope Instance { get; } = new NullScope();
+
+		private NullScope()
+		{
+		}
+
+		/// <inheritdoc />
+		public void Dispose()
+		{
+		}
+	}
+}