GitHub Action to lint Python code

[cclauss]

Output: https://github.com/cclauss/flask-state/actions

Run pytest .
ImportError while loading conftest '/home/runner/work/flask-state/flask-state/tests/conftest.py'.
tests/conftest.py:4: in <module>
    from src.flask_state import DEFAULT_BIND_SQLITE
E   ModuleNotFoundError: No module named 'src'
Error: Process completed with exit code 4.

[cclauss]

1. Added tests/__init__().py
2. Added redis to pip installed dependencies. Should it also be added to setup.py?
3. Added Typos found by codespell? recive ==> receive #10 for possible typos discovered by codespell
4. pytest fails on tests/test_utils.py ....F..

[PindleskinY]

redis is a pluggable dependency, so we do not plan to add it to setup.py. The redis ImportError will be fixed in the next version.

[PindleskinY]

Dear @cclauss, we sincere thanks for your those improvement code review. Have a good day!