Fix cli script

[patrick91]

This pr fixes the pyproject.toml to allow running robyn as a cli tool.

The configuration was almost correct, but poetry doesn't support the standard declaration.

To test this you can do:

poetry run robyn

and it should also work when installing robyn (or via pipx run robyn)

[vercel[bot]]

@patrick91 is attempting to deploy a commit to the sparckles Team on Vercel.

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[codspeed-hq[bot]]

CodSpeed Performance Report

Merging #727 will not alter performance

_{Comparing patrick91:fix/cli (f941148) with main (04291e9)}

Summary

✅ 106 untouched benchmarks