Chest & Fluid Slot Reader plus train priority signals

Read empty, full, total slots from chests and fluid tanks and send signal to network. E = empty (slots for chests, fluid units for tanks), F = full/used (slots or fluid amount), T = total capacity (slots or fluid capacity), Also gives signal for priority for the trains based of filled capacity of container. P = priority full 0.. 255 (255 when full, 0 when empty), R = priority empty 0.. 255 (255 when empty, 0 when full), Links to the nearest valid target on placement. Easy way to create generic train station and set train permission based of usage of the chests.