Link to pypistats on a project

[JacobCoffee]

Adds a link to see the project stats for the PSF-hosted pypistats package:

[miketheman]

See #787 for existing conversations on the topic

[JacobCoffee]

@miketheman Can this just be a step in that direction? Linking to them, that is. instead of pulling them. We can work towards that

[miketheman]

Possibly? I currently distrust the download counts as they are, and they are trivially inflatable, so linking directly to them adds a degree of "we bless this source of data with these results".
See the note here: https://pypi.org/stats/#:~:text=Third%2Dparty%20statistics

That's one reason (I believe) we haven't done so in the past, but that was also before the PSF adopted running pypistats. I still don't know the governance/ownership model, and there's a few open issues on the repo pointing out inaccuracies.

I think the topic of whether to link this service should be discussed over in that issue to get a better set of perspectives.