Electron UI for Golang Program?

You can use go-astilectron it allows you to build cross-platform GUI apps with GO and HTML/JS/CSS (powered by Electron) (disclosure: I'm the author)

You can execute your command line app from your Electron app via child_process.spawn and communicate with it via stdin/stdout.

The interaction of an application written in electron with its backend is exactly like a Web browser, therefore you have the same options (Web Api, Web Sockets, Ajax, etc.)

Murlock Is an Electron wrapper for Golang to make it easy for this kind of app for Mac. They're working on Windows and looking for contributions for the other platforms.