add linter check for implementation

[stxpatryk]

# Comment added at creation time to indicate empty file.

if __name__ == "__main__":
    print(say_deepnext())


def say_deepnext() -> str:
    """Return the DeepNext hello message."""
    return "DeepNext was here"

this kind of errors need to be detected!

example approach:

(deep-next-py3.11) patryk@D089KX3:~/PROJECTS/deep-next-open-source$ pre-commit run flake8 -a
flake8...................................................................Failed
- hook id: flake8
- exit code: 1

delete-me.py:4:11: F821 undefined name 'say_deepnext'

---

• Add evaluator on GitLab to make sure it doesn't exist anymore

[stxpatryk]

I don't think it's suited for automated code reviewer. Similarly to what dev does, code won't leave your local (having pre-commit) until liner is satisfied

[stxpatryk]

🚧 DeepNext status update

Assigned feature branch: deep_next/issue_93/2025_05_13_15_51_18

🟢 Issue #93 solution: #94