* Making saveMethod mandatory in attribute service
* Making unwrap method mandatory
* Making book embeddable respect new attribute service
* Remove savedObjectsClient from attribute service
* Add checkForDuplicateTitle method to book embeddable
* Make options mandatory on attribute service
* Changing Lens attribute service
* Somw more typescript fixes
* Fixing attribute service typescript and tests
* Fixing typescript errors
* Unsetting feature flag
Co-authored-by: Kibana Machine <42973632+kibanamachine@users.noreply.github.com>
Added an attribute service to embeddable start contract which provides a higher level abstraction for embeddables that can be by reference OR by value. Added an example that uses this service.
* Add embeddable via saved object example
* give todoRefEmbed a different name from the by value one
* fix types
* fix order of unmounting
Co-authored-by: Christos Nasikas <christos.nasikas@elastic.co>
* Add a new platform embeddable example plugin
* Remove extra hello world test impl.
* cleanup
* code review updates
* Change example to highlight and have parent filter out children
* Fix deep comparison of embeddable prop
* adjust help text