Add option to ProxySettings to append guid to mapping file (#838)

* Add option to ProxySettings to append guid to mapping file

* .

* .

* .

examples/WireMockAzureQueueExample/host.json

@@ -0,0 +1,11 @@
+{
+    "version": "2.0",
+    "logging": {
+        "applicationInsights": {
+            "samplingSettings": {
+                "isEnabled": true,
+                "excludedTypes": "Request"
+            }
+        }
+    }
+}