Created some helper functions for conversion (rso2cv) and to project points (projectPoints). ToDo: move these functions
Added chessboard class
find chessboard pose using solvePnP
Calculate reprojection error, using solvePnP result
Added some projection functions
Moved conversion functions
moved print vector to auxiliar
it is convenient to Transpose here
reimplementatin of project3dPoints
Changing name convention
Added findChessboardPose