Shadow Catcher Node

I was looking for a way to get a color shadow in Cycles and Eevee.

And after searching a lot I realized that there is no friendly, simple, easy, intuitive way to get this without doing a long process.

This is not from God and in honor of the time it took me to find the solution I would like to make a proposal, request, plea to the developers.

Render Eevee Shadow Catcher

Render Cycles without shadow catcher, because it doesn't keep the color.

Trying to place the color with the compositor.

Maybe a solution would be to create a node for this, something like this: