Make the list of denied packages on PyPI available to the community

We have two main use-cases on our side:

  • have a dataset where we could experiment with an automated typosquatting or spam packages detection
  • as Thoth supports cross-index resolution when package indexes are not treated as mirrors but rather separate sources of packages, we would like to make sure package names published on other indexes can be still valid package names on PyPI (besides PEP-423)