feat: create request projects for basic CQRS

src/request.result/IResultFactory.cs

@@ -0,0 +1,20 @@
+// Copyright (c) The Geekeey Authors
+// SPDX-License-Identifier: EUPL-1.2
+
+using System.Diagnostics.CodeAnalysis;
+
+namespace Geekeey.Request.Result;
+
+/// <summary>
+/// An interface for a result.
+/// </summary>
+[SuppressMessage("Naming", "CA1716:Identifiers should not match keywords")]
+public interface IResultFactory<out TSelf> where TSelf : IResultFactory<TSelf>
+{
+	/// <summary>
+	/// Creates a new result with a failure value.
+	/// </summary>
+	/// <param name="error">The error of the result.</param>
+	/// <returns>A new result with a failure value.</returns>
+	static abstract TSelf Failure(Error error);
+}