feat: invite user link (#8578)

# Which Problems Are Solved

As an administrator I want to be able to invite users to my application
with the API V2, some user data I will already prefil, the user should
add the authentication method themself (password, passkey, sso).

# How the Problems Are Solved

- A user can now be created with a email explicitly set to false.
- If a user has no verified email and no authentication method, an
`InviteCode` can be created through the User V2 API.
  - the code can be returned or sent through email
- additionally `URLTemplate` and an `ApplicatioName` can provided for
the email
- The code can be resent and verified through the User V2 API
- The V1 login allows users to verify and resend the code and set a
password (analog user initialization)
- The message text for the user invitation can be customized

# Additional Changes

- `verifyUserPasskeyCode` directly uses `crypto.VerifyCode` (instead of
`verifyEncryptedCode`)
- `verifyEncryptedCode` is removed (unnecessarily queried for the code
generator)

# Additional Context

- closes #8310
- TODO: login V2 will have to implement invite flow:
https://github.com/zitadel/typescript/issues/166

internal/api/grpc/management/custom_text.go

@@ -396,6 +396,54 @@ func (s *Server) ResetCustomPasswordChangeMessageTextToDefault(ctx context.Conte
 	}, nil
 }
 
+func (s *Server) GetCustomInviteUserMessageText(ctx context.Context, req *mgmt_pb.GetCustomInviteUserMessageTextRequest) (*mgmt_pb.GetCustomInviteUserMessageTextResponse, error) {
+	msg, err := s.query.CustomMessageTextByTypeAndLanguage(ctx, authz.GetCtxData(ctx).OrgID, domain.InviteUserMessageType, req.Language, false)
+	if err != nil {
+		return nil, err
+	}
+	return &mgmt_pb.GetCustomInviteUserMessageTextResponse{
+		CustomText: text_grpc.ModelCustomMessageTextToPb(msg),
+	}, nil
+}
+
+func (s *Server) GetDefaultInviteUserMessageText(ctx context.Context, req *mgmt_pb.GetDefaultInviteUserMessageTextRequest) (*mgmt_pb.GetDefaultInviteUserMessageTextResponse, error) {
+	msg, err := s.query.IAMMessageTextByTypeAndLanguage(ctx, domain.InviteUserMessageType, req.Language)
+	if err != nil {
+		return nil, err
+	}
+	return &mgmt_pb.GetDefaultInviteUserMessageTextResponse{
+		CustomText: text_grpc.ModelCustomMessageTextToPb(msg),
+	}, nil
+}
+
+func (s *Server) SetCustomInviteUserMessageCustomText(ctx context.Context, req *mgmt_pb.SetCustomInviteUserMessageTextRequest) (*mgmt_pb.SetCustomInviteUserMessageTextResponse, error) {
+	result, err := s.command.SetOrgMessageText(ctx, authz.GetCtxData(ctx).OrgID, SetInviteUserCustomTextToDomain(req))
+	if err != nil {
+		return nil, err
+	}
+	return &mgmt_pb.SetCustomInviteUserMessageTextResponse{
+		Details: object.ChangeToDetailsPb(
+			result.Sequence,
+			result.EventDate,
+			result.ResourceOwner,
+		),
+	}, nil
+}
+
+func (s *Server) ResetCustomInviteUserMessageTextToDefault(ctx context.Context, req *mgmt_pb.ResetCustomInviteUserMessageTextToDefaultRequest) (*mgmt_pb.ResetCustomInviteUserMessageTextToDefaultResponse, error) {
+	result, err := s.command.RemoveOrgMessageTexts(ctx, authz.GetCtxData(ctx).OrgID, domain.InviteUserMessageType, language.Make(req.Language))
+	if err != nil {
+		return nil, err
+	}
+	return &mgmt_pb.ResetCustomInviteUserMessageTextToDefaultResponse{
+		Details: object.ChangeToDetailsPb(
+			result.Sequence,
+			result.EventDate,
+			result.ResourceOwner,
+		),
+	}, nil
+}
+
 func (s *Server) GetCustomPasswordlessRegistrationMessageText(ctx context.Context, req *mgmt_pb.GetCustomPasswordlessRegistrationMessageTextRequest) (*mgmt_pb.GetCustomPasswordlessRegistrationMessageTextResponse, error) {
 	msg, err := s.query.CustomMessageTextByTypeAndLanguage(ctx, authz.GetCtxData(ctx).OrgID, domain.PasswordlessRegistrationMessageType, req.Language, false)
 	if err != nil {

internal/api/grpc/management/custom_text_converter.go

@@ -122,6 +122,21 @@ func SetPasswordChangeCustomTextToDomain(msg *mgmt_pb.SetCustomPasswordChangeMes
 	}
 }
 
+func SetInviteUserCustomTextToDomain(msg *mgmt_pb.SetCustomInviteUserMessageTextRequest) *domain.CustomMessageText {
+	langTag := language.Make(msg.Language)
+	return &domain.CustomMessageText{
+		MessageTextType: domain.InviteUserMessageType,
+		Language:        langTag,
+		Title:           msg.Title,
+		PreHeader:       msg.PreHeader,
+		Subject:         msg.Subject,
+		Greeting:        msg.Greeting,
+		Text:            msg.Text,
+		ButtonText:      msg.ButtonText,
+		FooterText:      msg.FooterText,
+	}
+}
+
 func SetPasswordlessRegistrationCustomTextToDomain(msg *mgmt_pb.SetCustomPasswordlessRegistrationMessageTextRequest) *domain.CustomMessageText {
 	langTag := language.Make(msg.Language)
 	return &domain.CustomMessageText{