* Support containers for blueprints
* Update OpenApi.json
* Fix tree ordering
* Add CancellationToken to new endpoints
* Change to doc blueprint specific things
* Fix policies
* Cleanup
* Use ContentBlueprintEditingService methods instead of underlying ContentService
* Review comments
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Co-authored-by: Elitsa <elm@umbraco.dk>
* Fix wrong service name
* Move tests to correct place and fix naming
* Introducing a test base
* Tests IContentBlueprintEditingService
* Remove comment
* Adding Assert.Multiple
* More Assert.Multiple + Can_Create_With_Basic_Model() and Cannot_Create_When_Content_Type_Not_Found()