feat: select idp and auto register (#2336)

* faet: auto regsiter config on idp

* feat: auto register on login

* feat: auto register on register

* feat: redirect to selected identity provider

* fix: test

* fix: test

* fix: user by id request org id

* fix: migration version and test

Co-authored-by: Livio Amstutz <livio.a@gmail.com>

internal/domain/next_step.go

@@ -27,6 +27,7 @@ const (
 	NextStepPasswordlessRegistrationPrompt
 	NextStepRegistration
 	NextStepProjectRequired
+	NextStepRedirectToExternalIDP
 )
 
 type LoginStep struct{}
@@ -67,6 +68,12 @@ const (
 	UserSessionStateTerminated
 )
 
+type RedirectToExternalIDPStep struct{}
+
+func (s *RedirectToExternalIDPStep) Type() NextStepType {
+	return NextStepRedirectToExternalIDP
+}
+
 type InitUserStep struct {
 	PasswordSet bool
 }