Semantic validation for ui.components

#### Is your feature request related to a problem? Please describe

For some ui components such as `ui.notification_bar` you can specify `events`. This is only working if also a `name` property is given, which is optional otherwise. If a name is not provided, the events are not catched and the root cause is unclear (fails silently).

#### Describe the solution you'd like

Warning the user about a missing parameter or mutually exclusive parameters would speed up debugging and development. This could be done by some kind of semantic validation, either at component input or in the IDE tools.

#### Describe alternatives you've considered

Check in the ui.component
Check through the IDE plugins

Start by examining ui.component and the IDE plugins to determine where component inputs are currently checked. Define how missing name and the events/name relationship should be reported, then verify that invalid ui.notification_bar configurations produce a clear warning instead of failing silently.

Written by the indexing model from the issue text.