Add example/documentation for psql extensions

[Olyno]

Hi 👋🏻
There is a lot of psql extensions which are really cool. But when I'm searching some documentations about any function, I don't find any example about how use them.

So my suggestion/idea would be: would it be possible to add some documentations about psql functions please? Like a button which open a popup with some examples kinda like policies or a link to the documentation.

[awalias]

nice idea @Olyno I'll make an issue for it internally 👍