Merge branch 'main' of gitlab.etp.kit.edu:grheine/gnn_cleanup into main

Conflicts:
	.gitignore
	README.md

.gitignore

-examples/tests
 **.pyc
 src/utils/__pycache__
 *.npy
 cleanup_env
-scripts/test.py
-examples/hit_cleanup_example.ipynb
-scripts/mdst_readout.py
 examples/testing_config.json