Include assets folder in wheel published to PyPI

[JWCook]

Project config already contains:

include = [
    { path = 'assets'},
    ...,
]

But somehow it's only being included in the sdist, not the wheel.

[JWCook]

To include non-code assets in the wheel, I think it will need to be under the main package directory. Options:

• Physically move the folder (kinda annoying)
• Use a feature in PDM to place it under package dir a build time