Feature/18 gates for n zone conveyor

implementation of gates in the n-Zone-Conveyor

• I have read and applied the design rules
• Was the feature branch updated from the develop branch and were there no problems?
• Have new tests been created if possible?
• Are all tests running ?
• Was documentation made if necessary?

Thanks for your MR! 👍

5. Next steps

• start with the code review
• Check ticked status!
• Does the merged branch have to be dissolved?