feature: Show app name in Menubar on macOS instead of the browser's name

[ylluminate]

When using Epichrome on macOS, it conveniently changes the name of the app to the actual "app" that we're using in the Menubar as well as the general process name for Dock cmd-tabbing. Currently when I create an app, for example "Amazon," it shows up ad Amazon in the Dock and in cmd-tab, but in the Menubar, when focused on the app it gives "Firefox" instead of Amazon.