Add API definitions for saved views

Matt D'Angelorequested to merge
524893-build-the-saved-views-graphql-apis into master

What does this MR do and why?

  • This MR introduces the API changes required for saved views:
  • CRUD operations, reordering and subscribe / unsubscribe in GQL
  • subscribe REST endpoint for users visiting shared links
  • Policy changes to support new saved view permissions

Note that the mutations and queries are currently no-ops, and the underlying logic will be introduced in a seperate MR.

References

Screenshots or screen recordings

Not provided

How to set up and validate locally

While the queries and mutations here are currently no-ops, it's possible to explore the arguments in GraphQL explorer, and confirm the mutations and queries return no data.

MR acceptance checklist

Evaluate this MR against the MR acceptance checklist. It helps you analyze changes to reduce risks in quality, performance, reliability, security, and maintainability.

Related to #524893

Edited by Matt D'Angelo

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