Add LEMO 0B 2, 3 and 4 pin connectors
LEMO 0B 2, 3 and 4 pin elbow connectors.
Details can be found in this document: https://docs.rs-online.com/5d88/0900766b8002b24e.pdf. The footprints are on p158 ("P19 - EPG-EXG (0B/1B.303)"). The dimensions are on p23. The corresponding mating connectors are on p12; I've used the shortest one to set the courtyard, which according to the library rules should be factored into the courtyard.
Edited by Sean Leavey