Add WireMock.org RestClient (#631)

* wip...

* x

* .

* .

* .

* r

* 1.4.21-preview-02

* 1.4.21-preview-03

* .

* usings

* wip

* .

* ut

* .

* .

* .

* tests

* .

* comments

* readme

src/WireMock.Org.Abstractions/Response.cs

@@ -0,0 +1,75 @@
+namespace WireMock.Org.Abstractions
+{
+    public class Response
+    {
+        /// <summary>
+        /// The HTTP status code to be returned
+        /// </summary>
+        public int Status { get; set; }
+
+        /// <summary>
+        /// The HTTP status message to be returned
+        /// </summary>
+        public string StatusMessage { get; set; }
+
+        /// <summary>
+        /// Map of response headers to send
+        /// </summary>
+        public object Headers { get; set; }
+
+        /// <summary>
+        /// Extra request headers to send when proxying to another host.
+        /// </summary>
+        public object AdditionalProxyRequestHeaders { get; set; }
+
+        /// <summary>
+        /// The response body as a string. Only one of body, base64Body, jsonBody or bodyFileName may be specified.
+        /// </summary>
+        public string Body { get; set; }
+
+        /// <summary>
+        /// The response body as a base64 encoded string (useful for binary content). Only one of body, base64Body, jsonBody or bodyFileName may be specified.
+        /// </summary>
+        public string Base64Body { get; set; }
+
+        /// <summary>
+        /// The response body as a JSON object. Only one of body, base64Body, jsonBody or bodyFileName may be specified.
+        /// </summary>
+        public object JsonBody { get; set; }
+
+        /// <summary>
+        /// The path to the file containing the response body, relative to the configured file root. Only one of body, base64Body, jsonBody or bodyFileName may be specified.
+        /// </summary>
+        public string BodyFileName { get; set; }
+
+        /// <summary>
+        /// The fault to apply (instead of a full, valid response).
+        /// </summary>
+        public string Fault { get; set; }
+
+        /// <summary>
+        /// Number of milliseconds to delay be before sending the response.
+        /// </summary>
+        public int FixedDelayMilliseconds { get; set; }
+
+        /// <summary>
+        /// Read-only flag indicating false if this was the default, unmatched response. Not present otherwise.
+        /// </summary>
+        public bool FromConfiguredStub { get; set; }
+
+        /// <summary>
+        /// The base URL of the target to proxy matching requests to.
+        /// </summary>
+        public string ProxyBaseUrl { get; set; }
+
+        /// <summary>
+        /// Parameters to apply to response transformers.
+        /// </summary>
+        public object TransformerParameters { get; set; }
+
+        /// <summary>
+        /// List of names of transformers to apply to this response.
+        /// </summary>
+        public string Transformers { get; set; }
+    }
+}