Some node_type_ renamings
There are some node_type_ arguments that are not identical to there class (camel case) as agreed (eg. FactorAutodiffDistance3D -> "DISTANCE 3D", FactorBlockDifference...). This issue will fix that and their gtests.
There are some node_type_ arguments that are not identical to there class (camel case) as agreed (eg. FactorAutodiffDistance3D -> "DISTANCE 3D", FactorBlockDifference...). This issue will fix that and their gtests.