api4/user: convey redirect link through email verification (#15052)

app/app_iface.go

@@ -423,9 +423,9 @@ type AppIface interface {
 	CreateTeamWithUser(team *model.Team, userId string) (*model.Team, *model.AppError)
 	CreateTermsOfService(text, userId string) (*model.TermsOfService, *model.AppError)
 	CreateUserAccessToken(token *model.UserAccessToken) (*model.UserAccessToken, *model.AppError)
-	CreateUserAsAdmin(user *model.User) (*model.User, *model.AppError)
-	CreateUserFromSignup(user *model.User) (*model.User, *model.AppError)
-	CreateUserWithInviteId(user *model.User, inviteId string) (*model.User, *model.AppError)
+	CreateUserAsAdmin(user *model.User, redirect string) (*model.User, *model.AppError)
+	CreateUserFromSignup(user *model.User, redirect string) (*model.User, *model.AppError)
+	CreateUserWithInviteId(user *model.User, inviteId, redirect string) (*model.User, *model.AppError)
 	CreateUserWithToken(user *model.User, token *model.Token) (*model.User, *model.AppError)
 	CreateWebhookPost(userId string, channel *model.Channel, text, overrideUsername, overrideIconUrl, overrideIconEmoji string, props model.StringInterface, postType string, postRootId string) (*model.Post, *model.AppError)
 	DataRetention() einterfaces.DataRetentionInterface
@@ -856,7 +856,7 @@ type AppIface interface {
 	SendAckToPushProxy(ack *model.PushNotificationAck) error
 	SendAutoResponse(channel *model.Channel, receiver *model.User) (bool, *model.AppError)
 	SendAutoResponseIfNecessary(channel *model.Channel, sender *model.User) (bool, *model.AppError)
-	SendEmailVerification(user *model.User, newEmail string) *model.AppError
+	SendEmailVerification(user *model.User, newEmail, redirect string) *model.AppError
 	SendEphemeralPost(userId string, post *model.Post) *model.Post
 	SendNotifications(post *model.Post, team *model.Team, channel *model.Channel, sender *model.User, parentPostList *model.PostList, setOnline bool) ([]string, error)
 	SendPasswordReset(email string, siteURL string) (bool, *model.AppError)