[MM-47542] Extend Plugin API (#21446)

* 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>

plugin/api_timer_layer_generated.go

@@ -1239,3 +1239,10 @@ func (api *apiTimerLayer) EnsureBotUser(bot *model.Bot) (string, error) {
 	api.recordTime(startTime, "EnsureBotUser", _returnsB == nil)
 	return _returnsA, _returnsB
 }
+
+func (api *apiTimerLayer) RegisterCollectionAndTopic(collectionType, topicType string) error {
+	startTime := timePkg.Now()
+	_returnsA := api.apiImpl.RegisterCollectionAndTopic(collectionType, topicType)
+	api.recordTime(startTime, "RegisterCollectionAndTopic", _returnsA == nil)
+	return _returnsA
+}