Make that you can toggle the Lasers and else with redstone

Lasers already use redstone as an output signal when someone walks through them, it's not possible to add a redstone input because of that. You can already toggle lasers by rightclicking the laser block with a Universal Block Modifier and clicking the respective button on the side, but I do realize that that can only be done manually and there's no way to automate this action.
I'm afraid, this won't be added.

then what about another button that toggles output or input

As I said in my previous message: It's not possible to have both available at the same time, which is why this won't be a thing. The output is the one that's being prioritized here, because there's at least a manual way of toggling lasers.