.whl.metadata file downloads are recorded with filetype=bdist_wheel

[alex]

These should probably have a distinct filetype, they're not actually wheels.

[di]

Transferring this to https://github.com/pypi/warehouse/ as the primary issue is with how we store the file.

This value is passed from the object storage metadata (via the x-amz-meta-package-type header) to the download logs.

It's set here:

warehouse/warehouse/forklift/legacy.py

Lines 1148 to 1157 in 16c9bce

	storage.store(
	file_.metadata_path,
	os.path.join(tmpdir, filename + ".metadata"),
	meta={
	"project": file_.release.project.normalized_name,
	"version": file_.release.version,
	"package-type": file_.packagetype,
	"python-version": file_.python_version,
	},
	)

We probably need to figure out a new "package type" to change this to. We'll need to update linehaul to be able to parse this new package type as well.