[MM-8497] Ability to set Do Not Disturb for a specified period of time (#17680)

* Revert "Revert "[MM-8497] Ability to set Do Not Disturb for a specified period of time (#16067)" (#17657)"

This reverts commit ff383990f8.

* add debug log for recurring function

* add feature flag for dnd timed status

* refactoring changes

Co-authored-by: Mattermod <mattermod@users.noreply.github.com>

store/store.go

@@ -605,6 +605,7 @@ type StatusStore interface {
 	ResetAll() error
 	GetTotalActiveUsersCount() (int64, error)
 	UpdateLastActivityAt(userID string, lastActivityAt int64) error
+	UpdateExpiredDNDStatuses() ([]*model.Status, error)
 }
 
 type FileInfoStore interface {