Knp-utils

- Made it faster to initialize backend DB.
- Made backend DB smaller size with zip compress.
- Possible to put argument field on the input document.
- Possible to run tests with docker

fixed https://github.com/Kensuke-Mitsuzawa/knp-utils-py/issues/21 https://github.com/Kensuke-Mitsuzawa/knp-utils-py/issues/22 https://github.com/Kensuke-Mitsuzawa/knp-utils-py/issues/23

It resolved a bug during updating backend sqlite3 database