[FEATURE] Generic "do nothing" command for non stateless switches

Feature request...

A DoNothing command that can be passed on either side of the / (for non stateless switches) when publishing devices.

Config (example)...

Logitech Amp|Optical;InputOptical/DoNothing Logitech Amp|Coax;InputCoax/DoNothing Logitech Amp|Direct;InputDirect/DoNothing

Results...

When a switch is turned On, it will pass the associated command.
When a switch is turned Off, it will essentially do nothing.

This allows for a non stateless switch that does not require a command for both On and Off. Specifically, in this scenario, a non stateless switch can be turned Off without passing the same (or any) command.

Automation benefits (example)...

Home App:

When Optical is turned On, turn Off Coax and Direct.
When Coax is turned On, turn Off Optical and Direct.
When Direct is turned On, turn Off Optical and Coax.

Additional context...

Currently, a non stateless switch requires (and passes) a command on both sides of the /.

The problem with this—when attempting the scenario (automation) above—is that undesired input commands are sent (when switches are turned Off) along with the desired input command (when a switch is turned On).

Specifically, one of the other two inputs is activated, instead of the desired input.

Having a generic "do nothing" command would solve this issue.

nicoduj / homebridge-harmony