feat: add isort job

mentioned in commit b786f332

mentioned in merge request Orange-OpenSource/lfn/ci_cd/chained-ci-py!233 (merged)

mentioned in merge request gaia-x/data-infrastructure-federation-services/deployment-scenario/credential-generator!55 (closed)

mentioned in merge request gaia-x/data-infrastructure-federation-services/deployment-scenario/catalogue/provider-catalogue!81 (merged)

mentioned in merge request to-be-continuous/samples/python-on-azure!39 (merged)

mentioned in merge request to-be-continuous/samples/python-library!16 (merged)

mentioned in merge request to-be-continuous/samples/python-helmfile-on-kubernetes!61 (merged)

mentioned in merge request to-be-continuous/samples/python-on-kubernetes!49 (merged)

mentioned in merge request to-be-continuous/samples/python-serverless-on-aws!127 (merged)