Add manually defined closing periods of the terminal

[1kastner]

At some moments, a terminal yard needs to be closed. In some countries (such as Germany), this happens at important holidays (a subset of the holidays officially established). In addition, strikes or Corona lockdowns could be an additional reason why vehicles are not scheduled to arrive at certain periods. Agnostic to the reason of the closing, in ConFlowGen the user just defines time windows during which no vehicles can arrive at the terminal. Vehicles that would arrive at that day are removed from the schedule.

[1kastner]

Question to clarify: What is more common in practice - that the port call is delayed or completely cancelled? This requires some research and maybe some talkings...