Add distortion correction to GenericProjection

[Affie]

For use in RoME here:
https://github.com/JuliaRobotics/RoME.jl/blob/4d6c466edb3978261e81cc65b2e991c7cde76387/ext/RoMECameraModelsExt.jl#L29

GenericProjection residual:

CameraModels.jl/src/services/CameraServices.jl

Line 124 in 9f98736

function projectHomogeneous(

radtan undistort:

CameraModels.jl/src/services/CameraServices.jl

Line 47 in 9f98736

function undistortPoint(cam::CameraCalibration, xy, iter_num=3)