1. Use PDM and `pyproject.toml` instead of the `requirements.txt` under `python/dify_plugin`.
2. Use PDM and `setup-pdm` action instead of setuptools and publish manually.
> You can configure trusted publishers for PyPI so that you don't need to expose the PyPI tokens in the release workflow. To do this, follow [the guide](https://docs.pypi.org/trusted-publishers/adding-a-publisher/) to add a publisher.
Signed-off-by: -LAN- <laipz8200@outlook.com>
-LAN-