Adding Pipeline to lifetime managers

Author: ENikS

src/Lifetime/Abstracts/LifetimeManager.cs

@@ -1,4 +1,5 @@
 using System;
+using Unity.Resolution;
 
 namespace Unity.Lifetime
 {
@@ -124,5 +125,15 @@ public override int GetHashCode()
         }
 
         #endregion
+
+
+        #region Internal Use
+
+        internal Delegate PipelineDelegate;
+
+        internal virtual object Pipeline<TContext>(ref TContext context) where TContext : IResolveContext 
+            => ((ResolveDelegate<TContext>)PipelineDelegate)(ref context);
+
+        #endregion
     }
 }