GeoTransformer_benchmark

The scripts to launch the benchmark are:

experiments/geotransformer.3dmatch.stage4.gse.k3.max.oacl.stage2.sinkhorn/run_registration_global.py for the NN trained on 3DMatch
experiments/geotransformer.kitti.stage5.gse.k3.max.oacl.stage2.sinkhorn/run_registration_global.py for the NN trained on KITTI