Implement x-ms-pageable #7402
Description
Implement x-ms-pageable with autorest v3 based generator:
https://github.com/Azure/autorest/blob/master/docs/extensions/readme.md#x-ms-pageable
Important note: Developing support for paging does NOT mean ARM support. It means developing the necessary interfaces and engines to make paging possible in a consistent way across service and client / mgmt.