Hello!
In game dev this would sometimes be called a timeline editor.
There are no active plans, but there are existing open feature requests for this here, including potential tools that could be implemented for it: Animation / timeline tool
Because this is an existing request, I am going to close out this thread, but in the interim keep in mind you can still do this concept (movement/sound/etc happening on a shared timeline) via events with a single scene timer and having events only activate after a certain amount of time has passed
Definitely not as easy as if there was a visual intertace for it, but you can do it today.