Add Notifications To Notification Scheme

Adds notifications to a notification scheme. You can add up to 1000 notifications per request.*Deprecated: The notification type `EmailAddress` is no longer supported in Cloud. Refer to the [changelog](https://developer.atlassian.com/cloud/jira/platform/changelog/#CHANGE-1031) for more details.***[Permissions](#permissions) required:** *Administer Jira* [global permission](https://confluence.atlassian.com/x/x4dKLg).