feat: add SAML as identity provider (#6454)

* feat: first implementation for saml sp

* fix: add command side instance and org for saml provider

* fix: add query side instance and org for saml provider

* fix: request handling in event and retrieval of finished intent

* fix: add review changes and integration tests

* fix: add integration tests for saml idp

* fix: correct unit tests with review changes

* fix: add saml session unit test

* fix: add saml session unit test

* fix: add saml session unit test

* fix: changes from review

* fix: changes from review

* fix: proto build error

* fix: proto build error

* fix: proto build error

* fix: proto require metadata oneof

* fix: login with saml provider

* fix: integration test for saml assertion

* lint client.go

* fix json tag

* fix: linting

* fix import

* fix: linting

* fix saml idp query

* fix: linting

* lint: try all issues

* revert linting config

* fix: add regenerate endpoints

* fix: translations

* fix mk.yaml

* ignore acs path for user agent cookie

* fix: add AuthFromProvider test for saml

* fix: integration test for saml retrieve information

---------

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

internal/idp/session.go

@@ -6,7 +6,7 @@ import (
 
 // Session is the minimal implementation for a session of a 3rd party authentication [Provider]
 type Session interface {
-	GetAuthURL() string
+	GetAuth(ctx context.Context) (content string, redirect bool)
 	FetchUser(ctx context.Context) (User, error)
 }
 
@@ -18,3 +18,11 @@ type Session interface {
 type SessionSupportsMigration interface {
 	RetrievePreviousID() (previousID string, err error)
 }
+
+func Redirect(redirectURL string) (string, bool) {
+	return redirectURL, true
+}
+
+func Form(html string) (string, bool) {
+	return html, false
+}