feat: add domain verification (#560)

* feat: add domain verification

* add checks

* add and fix tests

* fix go.mod

* regenerate proto

internal/config/systemdefaults/system_defaults.go

@@ -1,6 +1,8 @@
 package systemdefaults
 
 import (
+	"golang.org/x/text/language"
+
 	"github.com/caos/zitadel/internal/config/types"
 	"github.com/caos/zitadel/internal/crypto"
 	"github.com/caos/zitadel/internal/notification/providers/chat"
@@ -9,7 +11,6 @@ import (
 	"github.com/caos/zitadel/internal/notification/templates"
 	org_model "github.com/caos/zitadel/internal/org/model"
 	pol "github.com/caos/zitadel/internal/policy"
-	"golang.org/x/text/language"
 )
 
 type SystemDefaults struct {
@@ -20,6 +21,7 @@ type SystemDefaults struct {
 	Multifactors          MultifactorConfig
 	VerificationLifetimes VerificationLifetimes
 	DefaultPolicies       DefaultPolicies
+	DomainVerification    DomainVerification
 	IamID                 string
 	SetUp                 types.IAMSetUp
 	Notifications         Notifications
@@ -62,6 +64,11 @@ type DefaultPolicies struct {
 	OrgIam     org_model.OrgIamPolicy
 }
 
+type DomainVerification struct {
+	VerificationKey       *crypto.KeyConfig
+	VerificationGenerator crypto.GeneratorConfig
+}
+
 type Notifications struct {
 	DebugMode    bool
 	Endpoints    Endpoints