feat: Add pre-commit framework

[mateusoliveira43]

Describe the behavior changes introduced in this PR

Adds pre-commit framework to Pelorus.

Linked Issues

resolves #681
resolves #692

related to #780

Testing Instructions

Run make dev-env (this will run pre-commit install and setup pre-commit to you). Then, run pre-commit run --all-files to run pre-commit hooks against all files of Pelorus. Then, change a file and add it and commit it to see it in action.

If one of the hooks fails (defined in .pre-commit-config.yaml file), the commit is aborted. This can be bypassed by running git commit command with the -n/--no-verify flag.

[openshift-ci]

Hi @mateusoliveira43. Thanks for your PR.

I'm waiting for a konveyor member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[mpryc]

/ok-to-test

[mpryc]

/retest

[KevinMGranger]

todo for me: check if shellcheck in pre-commit works in macOS

[KevinMGranger]

Since the pre-run stuff is only necessary for CI (and makes assumptions about the user's repo), maybe it should be part of the github CI files only?

[mateusoliveira43]

Since the pre-run stuff is only necessary for CI (and makes assumptions about the user's repo), maybe it should be part of the github CI files only?

this is to address #692 not the CI

[openshift-ci]

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