feat: add inital in memory dispatcher

Add a simple in memory dispatcher for scalar requests and stream request.

src/request.result/_exceptions/UnwrapException.cs

@@ -0,0 +1,26 @@
+// Copyright (c) The Geekeey Authors
+// SPDX-License-Identifier: EUPL-1.2
+
+namespace Geekeey.Request.Result;
+
+/// <summary>
+/// The exception is thrown when an <see cref="Result{T}"/> is attempted to be unwrapped contains only a failure value.
+/// </summary>
+public sealed class UnwrapException : Exception
+{
+	/// <summary>
+	/// Creates a new <see cref="UnwrapException"/>.
+	/// </summary>
+	public UnwrapException()
+		: base("Cannot unwrap result because it does not have a value.")
+	{
+	}
+
+	/// <summary>
+	/// Creates a new <see cref="UnwrapException"/>.
+	/// </summary>
+	/// <param name="error">An error message.</param>
+	public UnwrapException(string error) : base(error)
+	{
+	}
+}