Add Proxy Setting for: SaveMappingForStatusCodePattern to only save the mapping when the status code matches the pattern (#357)

* proxy

* HttpStatusRangeParserTests

* test

src/WireMock.Net/Settings/IProxyAndRecordSettings.cs

@@ -1,4 +1,6 @@
-namespace WireMock.Settings
+using JetBrains.Annotations;
+
+namespace WireMock.Settings
 {
     /// <summary>
     /// IProxyAndRecordSettings
@@ -16,7 +18,14 @@
         bool SaveMapping { get; set; }
 
         /// <summary>
-        /// Save the mapping for each request/response to also file. (Note that SaveMapping must also be set to true.)
+        /// Only save request/response to the internal Mappings if the status code is included in this pattern. (Note that SaveMapping must also be set to true.)
+        /// The pattern can contain a single value like "200", but also ranges like "2xx", "100,300,600" or "100-299,6xx" are supported.
+        /// </summary>
+        [CanBeNull]
+        string SaveMappingForStatusCodePattern { get; set; }
+
+        /// <summary>
+        /// Save the mapping for each request/response also to a file. (Note that SaveMapping must also be set to true.)
         /// </summary>
         bool SaveMappingToFile { get; set; }
 

src/WireMock.Net/Settings/ProxyAndRecordSettings.cs

@@ -15,6 +15,10 @@ namespace WireMock.Settings
         [PublicAPI]
         public bool SaveMapping { get; set; } = true;
 
+        /// <inheritdoc cref="IProxyAndRecordSettings.SaveMappingForStatusCodePattern"/>
+        [PublicAPI]
+        public string SaveMappingForStatusCodePattern { get; set; } = "*";
+
         /// <inheritdoc cref="IProxyAndRecordSettings.SaveMappingToFile"/>
         [PublicAPI]
         public bool SaveMappingToFile { get; set; } = true;