add social media preview files for vrecord

[dericed]

github now supports social media preview files. It should be a png that is at least 640×320px (or 1280×640px for best display). I'm attaching the template.

[bturkus]

I'm just realizing how much I love this idea...we gotta find some good pics

[dericed]

Who's got this? @XFRCollective 👀

[dericed]

@libbyhopfauf wanna consider this one?