Update package build (and other minor bugs)

[kayelow]

Description of change

Fixes #4 -- updating the package build to include the metadata files.

I included a few small fixes for bugs I ran into trying to get the PyPI package to run so it should run with normal use, including fixing runs using the catalog generated by discovery mode. It looks like the metadata naming convention was changed previously, so to get it working without these changes I had to manually update the metadata references in the generated catalog to use currency instead of tap-criteo.currency. The catalog itself also wasn't referenced correctly when it was provided as an argument, and it was saving the bookmark in state.json with an incorrect format that made subsequent runs after the first fail.

Manual QA steps

• Run python3 setup.py sdist bdist_wheel and ensure build/lib/tap_criteo/metadata exists.
• Run discovery python3 -m tap_criteo.__init__ -c ../criteo_config.json --discover > catalog.json
• Run python3 -m tap_criteo.__init__ -c ../criteo_config.json --catalog ../catalog.json --state ../state.json | ../virtualenv/target-csv/bin/target-csv and ensure output contains fields as expected.

Risks

• Can't fully test the built distribution

Rollback steps

• Revert this branch

[cmerrick]

Hi @kayelow, thanks for your contribution!

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[cmerrick]

You did it @kayelow!

Thank you for signing the Singer Contribution License Agreement.

[kayelow]

@cmerrick Hi! I signed the CLA, and it looks like it was received, but let me know if there's anything else you need from me or any feedback you have.

[indyMccarthy]

Hello all ! Is there any reason that this PR is still pending ? More globally, the question arises for the entire repository's maintenance (not used, workaround, known OS alternatives ?) Thanks 🙏