Implementation of Ruff accross the project

[BastLeblanc]

Issue #, if available: #462

Description of changes:

• added pyproject.toml to the root of the project
• ran Ruff and auto fixed errors
• manual fixes of errors when wrongly fixed by Ruff (generators personalize)
• new github action on push and pull request to scan for Ruff
• contribution guidelines : automated checks should be green for a PR to be accepted

Description of testing performed to validate your changes (required if pull request includes CloudFormation or source code changes):

• local unit tests
• deployment of the CFN, with and without the auto create resources

Notes

• for now I ignored Line too long E501 - gives too many warnings, and requires a bit more work to test all the code base. But I propose that this would be asked for any new dev

By submitting this pull request, I confirm that you can use, modify, copy, and redistribute this contribution, under the terms of your choice.

[dairiley]

LGTM