Apply swh-py-template v0.3.3 with copier

Jenkins job DLDSVN/gitlab-builds #233 succeeded in 1 min 39 sec.
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added 3 commits

• 281c463c - Apply swh-py-template v0.3.3 with copier
• d9060986 - directory, replay: Fix black formatting
• 001c1361 - test_loader: Fix flake8 warning

Compare with previous version

Jenkins job DLDSVN/gitlab-builds #234 succeeded in 2 min 24 sec.
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merged manually