feat: workflowpattern package (#1618)

* feat: workflowpattern package

* nolint:gocyclo

---------

Co-authored-by: mergify[bot] <37929162+mergify[bot]@users.noreply.github.com>

pkg/workflowpattern/trace_writer.go

@@ -0,0 +1,18 @@
+package workflowpattern
+
+import "fmt"
+
+type TraceWriter interface {
+	Info(string, ...interface{})
+}
+
+type EmptyTraceWriter struct{}
+
+func (*EmptyTraceWriter) Info(string, ...interface{}) {
+}
+
+type StdOutTraceWriter struct{}
+
+func (*StdOutTraceWriter) Info(format string, args ...interface{}) {
+	fmt.Printf(format+"\n", args...)
+}