Comment by runevault

To some degree subsets of this exist.

For example for 2d games it is possible to use Tiled as a level editor if you build your game (or some tool) to parse out tiled's file format and turn it into in-game levels.

A more general purpose editor in line with Unity or Godot's that includes the ability to attach functionality to everything would be much harder since the specifics of that will be much more engine specific.