feat: add IStepExecutionContext to UserTask

Author: IvanJosipovic

src/extensions/WorkflowCore.Users/ServiceExtensions/StepBuilderExtensions.cs

@@ -18,7 +18,7 @@ public static IStepBuilder<TData, UserStep> UserStep<TData, TStepBody>(this ISte
         {
             var newStep = new UserStepContainer();
             newStep.Principal = assigner;
-            newStep.UserPrompt = userPrompt;            
+            newStep.UserPrompt = userPrompt;
             builder.WorkflowBuilder.AddStep(newStep);
             var stepBuilder = new StepBuilder<TData, UserStep>(builder.WorkflowBuilder, newStep);
 
@@ -64,5 +64,23 @@ public static IUserTaskBuilder<TData> UserTask<TData, TStepBody>(this IStepBuild
 
             return stepBuilder;
         }
+
+        public static IUserTaskBuilder<TData> UserTask<TData, TStepBody>(this IStepBuilder<TData, TStepBody> builder, string userPrompt, Expression<Func<TData, IStepExecutionContext, string>> assigner, Action<IStepBuilder<TData, UserTask>> stepSetup = null)
+            where TStepBody : IStepBody
+        {
+            var newStep = new UserTaskStep();
+            builder.WorkflowBuilder.AddStep(newStep);
+            var stepBuilder = new UserTaskBuilder<TData>(builder.WorkflowBuilder, newStep);
+            stepBuilder.Input(step => step.AssignedPrincipal, assigner);
+            stepBuilder.Input(step => step.Prompt, data => userPrompt);
+
+            if (stepSetup != null)
+                stepSetup.Invoke(stepBuilder);
+
+            newStep.Name = newStep.Name ?? typeof(UserTask).Name;
+            builder.Step.Outcomes.Add(new ValueOutcome { NextStep = newStep.Id });
+
+            return stepBuilder;
+        }
     }
 }