feat: register org process (#558)

* feat: register new organisation

* feat: create org request in management

* fix: tests

* Update internal/ui/login/static/i18n/en.yaml

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

* Update internal/ui/login/static/i18n/de.yaml

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

* Update internal/ui/login/static/templates/register_org.html

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

* Update internal/ui/login/handler/register_org_handler.go

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

* Update internal/ui/login/handler/register_org_handler.go

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

* fix: remove autocomplete

* fix: regenerate proto

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

internal/org/model/org_iam_policy.go

@@ -11,6 +11,7 @@ type OrgIamPolicy struct {
 	State                 PolicyState
 	UserLoginMustBeDomain bool
 	Default               bool
+	IamDomain             string
 }
 
 type PolicyState int32