Corrected handling for grid and tangent lines as well as all water net data. Now the failing tests work so removed the WiP status for these tests.Related to Issue [MWDAM-1627]
Moved TestHelper class to a dedicated testhelper folder:- Class has nothing to do with DamMacroStability and is used by other kernelwrappers. Class should therefore be kept in a separate solution folderRelated to Issue [MWDAM-1629]