Create WireMock.Net.ProtoBuf project (#1350)

* Create WireMock.Net.ProtoBuf project

* ok

* Update Directory.Build.props

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

---------

Co-authored-by: Copilot <175728472+Copilot@users.noreply.github.com>

src/WireMock.Net.Shared/Settings/HttpClientSettings.cs

@@ -0,0 +1,32 @@
+// Copyright © WireMock.Net
+
+using System.Security.Cryptography.X509Certificates;
+
+namespace WireMock.Settings;
+
+/// <summary>
+/// HttpClientSettings
+/// </summary>
+public abstract class HttpClientSettings
+{
+    /// <summary>
+    /// The clientCertificate thumbprint or subject name fragment to use.
+    /// Example thumbprint : "D2DBF135A8D06ACCD0E1FAD9BFB28678DF7A9818". Example subject name: "www.google.com""
+    /// </summary>
+    public string? ClientX509Certificate2ThumbprintOrSubjectName { get; set; }
+
+    /// <summary>
+    /// Defines the WebProxySettings.
+    /// </summary>
+    public WebProxySettings? WebProxySettings { get; set; }
+
+    /// <summary>
+    /// Proxy requests should follow redirection (30x).
+    /// </summary>
+    public bool? AllowAutoRedirect { get; set; }
+
+    /// <summary>
+    /// The <see cref="X509Certificate2"/> to use.
+    /// </summary>
+    public X509Certificate2? Certificate { get; set; }
+}