Add ability to turn off "project moved" notifications

By default project and group maintainers/owners receive a "project moved" e-mails, but this can now be configured. These same users watching or participating in a project will also receive a notification unless the setting is explicitly disabled.

Closes #30371 (closed)

Migration

ALTER TABLE "notification_settings" ADD "moved_project" boolean DEFAULT TRUE

#database-lab result:

The query has been executed. Duration: 114.000 ms

Screenshot