Added aims parser and normalizer. Refactored test data.

.vscode/launch.json

nomad/dependencies.py

nomad/normalizing/__init__.py

nomad/normalizing/fhiaims.py

nomad/normalizing/normalizer.py

nomad/normalizing/symmetry.py

nomad/normalizing/system.py

nomad/normalizing/systemtype.py

nomad/parsing.py

tests/misc.http

tests/test_normalizing.py

tests/test_parsing.py