drawers:controller fails to use empty drawers

[SwissalpS]

1. Set up a couple drawers and attach a controller
2. attach tp-tube to controller for receiving
3. send a stack
4. controller correctly puts stack in an empty drawer
5. send more stacks until drawer is full
6. send one more stack
7. Error: controller rejects stack even though there are empty drawers available.

Is this bug or feature?

[OgelGames]

If I understand correctly, the drawer controller doesn't use empty drawers for overflow of full drawers? IMO this should be configurable on the drawer controller if that is the case.

[SwissalpS]

Yes, I think you understood.
Also a config option would be cool.

[S-S-X]

I'd say it is kind of good feature in some cases to skip empty but very useful in others to allow filling empty so 👍 for config option, also default behavior for drawers in world should stay how it is currently: empty drawers skipped.
For newly added drawers / controllers default could be either way, just to keep behavior of already placed drawers.

[SwissalpS]

I started to work on this branch.

[SwissalpS]

How should I label the toggle?
For now I have "Use all drawers". I think there is a better and more illuminating way of saying what it does.
Help appreciated.

[SwissalpS]

@jessicara and others, please test / review this PR