Add basic structure of corsika Python package.

MAINTAINERS.md

python/.gitignore

python/Makefile

python/README.md

python/corsika/__init__.py

python/corsika/io/__init__.py

python/corsika/io/hist.py

python/corsika/io/library.py

python/corsika/io/outputs/__init__.py

python/corsika/io/outputs/observation_plane.py

python/corsika/io/outputs/output.py

python/setup.cfg

python/setup.py

python/tests/__init__.py

python/tests/io/__init__.py

python/tests/io/test_hist.py