In ControlBarComponent the property project replaces the property
isAspectPlayer. It ensures that delays are used only in the player
and hints are always visible in the editor.

All elements now use the elementValueChanged event. Also
formValueChanged is changed.

* Change the detection of the parent element to determine whether the
audio/video player is running in the aspect-editor or the aspect-player

* Remove FormService Injection
* Move FormService and form types to player
* Move interface ValueChangeElement to uI-element.ts
* Use interface InputElementValue instead of
string | number | boolean | null