missing cost types

[drchrislewis]

industrial_calibration/industrial_extrinsic_cal/src/ceres_costs_utils.cpp

Line 27 in 8f64e56

Cost_function string2CostType(std::string& cost_type_str)

@d-walsh pointed out that at least one cost type was removed in error. We need to verify that all cost types have been added to this helper function. I believe several cost have been added. Many costs implemented are unnecessary. We should clean it up to make it easier for people to know which cost to use when. For example, nobody I know of has used the library to calibrate the target itself. Therefore only the PK type (point locations known) are used.