chore: replace black, flake8 and isort with ruff and ruff-format

[gruebel]

This PR

same as in open-feature/python-sdk#249

• merged both workflows merge.yml and pullrequest.yml into build.yml, like in the python-sdk project, they were almost identical, just the trigger was different
• also migrated from container based builds to the normal host ones by leveraging setup-python GHA, same as in the python-sdk project

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (684a90a) 63.44% compared to head (fd02ae9) 85.12%.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #30 +/- ## =========================================== + Coverage 63.44% 85.12% +21.67% =========================================== Files 8 6 -2 Lines 238 121 -117 =========================================== - Hits 151 103 -48 + Misses 87 18 -69 ``` | [Flag](https://app.codecov.io/gh/open-feature/python-sdk-contrib/pull/30/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-feature) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/open-feature/python-sdk-contrib/pull/30/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-feature) | `85.12% <ø> (+21.67%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=open-feature#carryforward-flags-in-the-pull-request-comment) to find out more.

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[beeme1mr]

Did you intend to remove CodeQL?

[gruebel]

@beeme1mr it is still there, previously named pullrequest.yml, now build.yml file. Just need to expand at the bottom of the file, tries to hide itself 😄

[beeme1mr]

🤦 my bad... the change looks good.

[gruebel]

@beeme1mr do you know what the required build (python:3.8) checks are? I don't see them anywhere defined, so not sure why they are hanging.

[beeme1mr]

@beeme1mr do you know what the required build (python:3.8) checks are? I don't see them anywhere defined, so not sure why they are hanging.

The branch protection rules needed to be updated.