Gracefully cancel crafting tasks

[ramidzkh]

Describe the feature

Add a graceful cancel button to the crafting CPU menu, which will stop starting further jobs, but wait for existing crafting jobs to finish.

Reasons why it should be considered

This makes machines flush all their outputs, so if a job is started later, we don't re-craft something the player doesn't know is already 99% made in some machine.

Additional details

No response