Adding one more keybind for a 'secondary action'

Aaryl

It would be nice to have a separate keybind for secondary action (using syringe/styptic etc) and a skillcheck (skillcheck while healing/gen etc) as right now they use the same keybind.

I tried changing it from Spacebar to M4 so that it doesn't overlap with throwing down a pallet but I want to hit skillchecks with the default Spacebar..