Added footprint for OLED 128x64

https://www.vishay.com/docs/37902/oled128o064dbpp3n00000.pdf

Added footprint for dirt cheap 128x64 oled displays. Only display "connector" (flex cable soldered directly to the pcb) and short part of the flex cable are drawn. The display itself can be positioned on other side of pcb, mounted on device chassis,...