GitLab

Update version to include revision hash and date in "{last tag}+g{git
hash}.d{date}" format, here're the examples:
* exact tag: 0.6.0
* commit after tag: 0.6.0+gcbb1b34
* commit after tag with local changes: 0.6.0+gcbb1b34.d20221028

Update packages and add build cache for CUDA 11.1.1 Dockerfile:

* Remove duplicate cmake and ompi, which are already in base image
* Add hpcx and sharp lib
* Add cache for gitmodules build
* Sort apt-get packages

Initialize setup.py and basic configurations for this project.

Major revisions:

- initialize setup.py for Python package
- add gitignore and dockerignore
- add editorconfig for editors
- configure yapf for auto formating
- configure mypy for type hint
- configure flake8 for lint, including quotes and docstrings
- add pre-commit check for `git commit`
- add spelling check in GitHub Actions
- format existing files according to configured rules

Example usage:

    # install dependencies
    $ python3 -m pip install -e .[dev,test]
    $ pre-commit install

    # format code automatically
    $ python3 setup.py format

    # lint code
    $ python3 setup.py lint

    # test code
    $ python3 setup.py test