Cmdlet for subscription creation

[sevaa]

Please provide a cmdlet for creating collection level subscriptions, as outlined here.

The Web UI for creating those has been around for a while. It's under Collection Settings/Global notifications/Subscribers, but in ADO2019, they've removed the SOAP option. Internally, it's still supported and you can create SOAP subscriptions directly via REST API, but it's not exactly convenient.

Some background here.