Update the logic for ProxyAndRecord (#747)

* .

* set

* .

* .

* .

* .

* prio

* appsettings

* TinyMapperUtils

* set

* p

* nullable

* .

* ,

* fs

* .

* .

* --PreferProxyMapping

src/WireMock.Net.Abstractions/Admin/Settings/WebProxySettings.cs

@@ -0,0 +1,24 @@
+namespace WireMock.Admin.Settings
+{
+    /// <summary>
+    /// WebProxySettings
+    /// </summary>
+    [FluentBuilder.AutoGenerateBuilder]
+    public class WebProxySettingsModel
+    {
+        /// <summary>
+        /// A string instance that contains the address of the proxy server.
+        /// </summary>
+        public string Address { get; set; }
+
+        /// <summary>
+        /// The user name associated with the credentials.
+        /// </summary>
+        public string UserName { get; set; }
+
+        /// <summary>
+        /// The password for the user name associated with the credentials.
+        /// </summary>
+        public string Password { get; set; }
+    }
+}