[FEATURE] More options for Lift-Calling

[xCraimax]

Is your feature request related to a problem? Please describe.
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Describe the solution you'd like
Being able to specify a button, which send the elevator up/down by one floor.
Being able to specify a lever, which sends the elevator up/down (going from the enabled/disabled state of the lever), when there's only two floors.

Describe alternatives you've considered
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Additional context
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[stijnb1234]

Why would you need a lever for this? Never seen an elevator with a lever.

[xCraimax]

I've never seen an elevator with a lever aswell.
The lever was an idea I got, but a button is fine aswell.

[stijnb1234]

I agree there should be a button to go to a specific floor directly. Should it add the action to the queue, or go directly to that floor? The problem is that the user can also queue floors inside the cab.

[xCraimax]

As I think, the queue from inside the cab should be prioritized.