Google Reviews

I posted this in Zulip, but I got no response there and thought I would post here.

Has anyone done anything with including Google Reviews in a Backdrop site?

If so, what did you do, just include the code bits necessary in a custom module or block, or something else?

I don't see any contrib modules that appear to provide that functionality, though there is a D10 module that doesn't look like it's very complicated, so it seems reasonable that it could be a single function.