* unexpose SavedObjectsManagement from legacy server
* migrate saved object management routes to new plugin
* fix endpoint methods
* adapt code due to rebase
* extract types
* improve findAll params
* adapt existing api integration tests and migrate to TS
* update generated doc
* add API integration tests for /scroll/count
* add unit tests for plugin and routes
* add injectMetaAttributes tests
* extract relation type
* add find_relationships tests
* add find_all tests
* do not complete migrator$ to avoid unhandled promise rejection
* fix data for search endpoint integration tests
* remove falsy comment
* rename plugin folder to match plugin id
* address review comments
* update CODEOWNERS
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