Show HN: Quick DNS Switcher for Gnome

Hi HN, At work I need to switch DNS servers to access our test/acceptance environments. Doing this manually was quite a hassle, so I made a little toolbar menu that lets me do it quickly. See the GitHub repo for a GIF, or here's a direct link: <https://user-images.githubusercontent.com/5613416/248574223-56e66264-5f35-4385-9a47-b8827906e631.gif https://user-images.githubusercontent.com/5613416/248574223-...>