Add different font sizes for OLED Status Display; include more information on the display

[TrainzLuvr]

A 6 point size bold font would be much better than the current 8, as not all of the information fits on the 128x64 screen.

Also, OPS power utilization would be great, in a larger font size such as 12 or 16, in the middle of the screen which is currently empty.

Railcom status as well could be included among other things.