fix: multiple setup steps (#773)

* fix: multiple setup steps

* fix: test set up started

* fix: possible nil pointers in setup

* fix: validate executed step

internal/setup/step2.go

@@ -0,0 +1,30 @@
+package setup
+
+//TODO: label policy
+// import (
+// 	"context"
+
+// 	iam_model "github.com/caos/zitadel/internal/iam/model"
+// )
+
+// type Step2 struct {
+// 	DefaultLabelPolicy LabelPolicy
+
+// 	setup *Setup
+// }
+
+// func (s *Step2) isNil() bool {
+// 	return s == nil
+// }
+
+// func (step *Step2) step() iam_model.Step {
+// 	return iam_model.Step2
+// }
+
+// func (step *Step2) init(setup *Setup) {
+// 	step.setup = setup
+// }
+
+// func (step *Step2) execute(ctx context.Context) error {
+// 	return nil
+// }