Use `🔍` instead of `👁` for Hint button

[Cwpute]

A real small nitpick but since the magnifying glass is already used in the game icon, i though it could be reused for the Hint button as well :)

Maybe a clearer icon would be a magnifying class accompanied with a question mark, i know you can find it in quite a few other apps. You can find quite a good bunch of them here, and on ReactIcons some others like <TbZoomQuestion /> could be used as well.

[timcharper]

Ah, yeah, I could probably do that.

I chose the eye icon because it's in the gnome standard icon set