FEAT: Share to other kibana space

[timgoud]

there is also a possibility to share an object instead of copying it

so i would like to request a feature: Enable object sharing (Share to spaces) (https://www.elastic.co/guide/en/kibana/current/managing-saved-objects.html#managing-saved-objects-share-to-space)

API: /s/<space_id>/api/spaces/_update_objects_spaces
Query: {"objects":[{"type":"index-pattern","id":""}],"spacesToAdd":[],"spacesToAdd":["SpaceID"],"spacesToRemove":["SpaceID"]}