Add radio beacon spawns to blue logi points

ctld allows for radio beacon spawns - add these to blue logi points for assistance in finding those in the dark / from a distance (https://www.youtube.com/watch?v=lN4AcFzxtdE)

Should not be instead of illumination for night / instead of smoke, but as an additional method of finding them for those who are familiar with radio navigation in helos / Harrier.