Allow deleting only unwanted ends off conveyor belts


Ctrl + LMB allows for accurate (manual) placement of belts.

Would be nice if deleting belt parts could be done manually as well without having to delete the entire belt tile and replacing the belt.
Best if the ingredient stays on the belt as long as there is a belt left to hold it.

This would improve belt handling especially in the early game when deleting and replacing costs a lot, especially when there are ingredients stuck on the belt and investing in a one-way belt modifier doesn’t work (T-Junction).