LTN Train Information combinator

Provides information about Logistic Train Network (LTN) deliveries to the logistic network:

• An signal for each item in a delivery. Can be quantity, stack count or just '1'.
• Virtual signals to denote whether the connected station is the requester or the provider of the delivery
• Delivery signals can be negated or divided by a constant.
• Signals can be configured separately for Requester and Provider.

Signals always reflect the delivery as scheduled by the LTN, not the inventory of the train.