Implement package extension support for wheel files

[danyeaw]

What is the idea?

Patch conda's package extension support to allow creation of proper prefix records for .whl files, enabling conda to track and manage them like other packages.

Why is this needed?

Even if conda accepts .whl files as valid formats, it won't know how to create proper package records for them, which are essential for conda's package management features like listing, updating, and removing packages.

What should happen?

The patch should modify conda's package record creation functions to handle .whl files by extracting metadata and creating appropriate prefix records. This should integrate with conda's existing package tracking system.

Additional Context

This patch needs to work with conda's prefix data system and ensure that wheel-based packages appear correctly in conda list and other package management commands. https://github.com/Anaconda/conda-whl-support has a demo implementation.

[jaimergp]

PrefixData will parse whatever well-formed *.json is found in conda-meta. What we need to do is to generate those JSON records for those wheels. At that point, though, one should wonder if we should simply run whl2conda on the fly, because it will take care of those. The only missing feature there is to refer to the original wheel in the lockfiles because the converted conda will be local only.