Merge branch 'mesh-pygel3d' into 'main'

docs/assets/screenshots/pygel3d_visualization.png

docs/doc/cli/cli.md

docs/doc/data_handling/io.md

docs/doc/gui/gui.md

docs/doc/releases/releases.md

qim3d/__init__.py

qim3d/features/_common_features_methods.py

qim3d/filters/_common_filter_methods.py

qim3d/io/_loading.py

qim3d/io/_saving.py

qim3d/mesh/_common_mesh_methods.py

qim3d/tests/mesh/test_mesh.py

qim3d/viz/_k3d.py

requirements.txt

setup.py