- [DOCS] Document how to disable specific option
- [DOCS] Add troubleshooting section with most common pitfalls.
- [FEATURE] The user can provide a `onkeydown` action that will be invoked whenever the user
  presses a key being the component (of the searchbox inside) focused. This enables to create
  selects components that can create options on the fly (tags).
  This action received the dropdown as first argument and the event as second argument