* Extend Plugin API
* Use Error, NoError in tests
* Address suggestions
* Simplify code
* Add new line
* Add featureflag and GetCollectionMetadataByIds hook
* Add enter at the end of file
* make build-templates
* Fix test
* Fix GetCollectionMetadataByIds ret type
* Add GetTopicMetadataByIds hook
* Add log
* Extract i18n
* Add experimental notice on hooks
* Update model/feature_flags.go
* Swap user to userId
* Change userId to userID
Co-authored-by: Jesse Hallam <jesse.hallam@gmail.com>