feat: request registration process by prompt (#1798)

* feat: request registration process by prompt

* fix merge

* add prompt create to docs

internal/domain/next_step.go

@@ -24,6 +24,7 @@ const (
 	NextStepExternalLogin
 	NextStepGrantRequired
 	NextStepPasswordless
+	NextStepRegistration
 )
 
 type LoginStep struct{}
@@ -32,6 +33,12 @@ func (s *LoginStep) Type() NextStepType {
 	return NextStepLogin
 }
 
+type RegistrationStep struct{}
+
+func (s *RegistrationStep) Type() NextStepType {
+	return NextStepRegistration
+}
+
 type SelectUserStep struct {
 	Users []UserSelection
 }