Add ToArray() to ConcurrentObservableCollection (#1256)

* Add ToArray() to ConcurrentObservableCollection

* ---

Author: StefH

src/WireMock.Net/Server/WireMockServer.LogEntries.cs

@@ -26,7 +26,6 @@ public event NotifyCollectionChangedEventHandler LogEntriesChanged
     [PublicAPI]
     public IReadOnlyList<ILogEntry> LogEntries => _options.LogEntries.ToArray();
 
-
     /// <inheritdoc />
     [PublicAPI]
     public IReadOnlyList<ILogEntry> FindLogEntries(params IRequestMatcher[] matchers)

src/WireMock.Net/Util/ConcurrentObservableCollection.cs

@@ -84,4 +84,12 @@ public List<T> ToList()
             return Items.ToList();
         }
     }
+
+    public T[] ToArray()
+    {
+        lock (_lockObject)
+        {
+            return Items.ToArray();
+        }
+    }
 }