move DbTriggerParams to Infrastructure layer.

- createConfig for flexable configuration

EnvelopeGenerator.Infrastructure/EnumerableExtensions.cs

@@ -0,0 +1,20 @@
+#if NETFRAMEWORK
+using System.Collections.Generic;
+using System;
+#endif
+
+namespace EnvelopeGenerator.Infrastructure
+{
+    public static class EnumerableExtensions
+    {
+#if NETFRAMEWORK
+        public static void ForEach<T>(this IEnumerable<T> values, Action<T> action)
+        {
+            foreach (T value in values)
+            {
+                action(value);
+            }
+        }
+#endif
+    }
+}