Support highlighting for console sessions

Hi! Is it planned syntax highlighting for console sessions? Something like **highlight.js** do with the [`shell` language definition](https://github.com/highlightjs/highlight.js/blob/master/src/languages/shell.js). (See [demo](https://highlightjs.org/static/demo/), scroll down to *Shell Session* section.)

I'm writing teaching material with Pandoc and I need to write many shell commands with console sessions.

Thanks in advance!