feat: create request projects for basic CQRS

src/request.validation/Validation.cs

@@ -0,0 +1,32 @@
+// Copyright (c) The Geekeey Authors
+// SPDX-License-Identifier: EUPL-1.2
+
+namespace Geekeey.Request.Validation;
+
+/// <summary>
+/// Represents the result of executing one or more validations against a given object or request.
+/// </summary>
+public sealed class Validation
+{
+	/// <summary>
+	/// Represents the result of executing one or more validations against a given object or request.
+	/// </summary>
+	/// <remarks>
+	/// This class contains the list of validation problems identified during the validation process.
+	/// A validation is considered successful if no problems are found.
+	/// </remarks>
+	public Validation(IEnumerable<Problem> problems)
+	{
+		Problems = [.. problems];
+	}
+
+	/// <summary>
+	/// Whether the validation was successful.
+	/// </summary>
+	public bool IsValid => Problems.Count is 0;
+
+	/// <summary>
+	/// The problems that were found during validation.
+	/// </summary>
+	public IReadOnlyList<Problem> Problems { get; }
+}