ENH: Show contributor image on homepage

[larsoner]

I saw this over on https://github.com/conda-incubator/setup-miniconda#contributors and thought it was neat, thought we might consider adding something similar. It ends up looking like this currently:

[cbrnr]

Looks good! I guess this won't be enough to convince everyone that this resolves #11605?

[larsoner]

I think the larger issues there would remain unresolved even if we add this

[drammock]

I have somewhat mixed feelings. It seems nice to include this content on the homepage, but I'm a bit sad that the result comes as a pre-built SVG without control over the layout (i.e. number of columns; I'm assuming it will look pretty bad on mobile as a result --- @larsoner did you check that?)

Can we leave this as draft for a week, and if I haven't managed to home-build something better that is layout-responsive, then we can just go with this one (assuming it's not too terrible on mobile)?

[larsoner]

I'm assuming it will look pretty bad on mobile as a result --- @larsoner did you check that?)

I hadn't, but I think it's okay -- you can tell that there are people which seems reasonable for a mobile view. Here's Google's GS20Ultra interpretation:

But what I actually see on my phone is a bit nicer actually, I can recognize some people at least :)

[larsoner]

@drammock also feel free to tweak any CSS or whatever, push, and merge when you're happy

[drammock]

OK that took a tad longer than I hoped, but 50 lines of javascript and the GitHub API got the job done. Now it's responsive to screen width (and if we want we can customize the avatar size or add other styling)

[drammock]

(as an added bonus, this now shows all contribs, not just the top 100)

[larsoner]

Thanks @drammock !

[cbrnr]

Very cool @drammock!