Add more NPY201 tests

[MichaReiser]

Summary

Adds more tests for NPY201 as mentioned here.

I also split the tests into multiple files and reduced the max iteration limit back to 10.

Test Plan

cargo test

[MichaReiser]

@mtsokol could you take a look at the test output. Does the output look correct to you?

The output of the newly added tests are all in

0420ed1

[mtsokol]

Yes! They're all correct - thanks!

[github-actions]

ruff-ecosystem results

Linter (stable)

✅ ecosystem check detected no linter changes.

Linter (preview)

ℹ️ ecosystem check encountered linter errors. (no lint changes; 1 project error)

demisto/content (error)

ruff check --no-cache --exit-zero --ignore RUF9 --output-format concise --preview

warning: The top-level linter settings are deprecated in favour of their counterparts in the `lint` section. Please update the following options in `pyproject.toml`:
  - 'ignore' -> 'lint.ignore'
  - 'select' -> 'lint.select'
  - 'unfixable' -> 'lint.unfixable'
  - 'per-file-ignores' -> 'lint.per-file-ignores'
warning: `PGH001` has been remapped to `S307`.
warning: `PGH002` has been remapped to `G010`.
warning: `PLR1701` has been remapped to `SIM101`.
ruff failed
  Cause: Selection of deprecated rule `E999` is not allowed when preview is enabled.