Draft: Added the YAML to VP for dealing with bad areas of sensors (dead or low efficiency)

Added the YAML code to allow both an efficiency map of the sensors to be added in 16x16 pixel squares (~140k floats) and a list of 16x16 groups of pixels to kill for simulation of temporary sensor issues.

This will be read by lhcb/Boole!601 (merged) but can be updated independently of that change.