[blacksmith_tb]

Ah, but it looks like that means you need to be rooted?

[undersuit]

Yes the Android OS requires you to be rooted to add the feature if your image wasn't built with the privileged extension.

[nobodywasishere]

You don't need to be rooted if you're using a custom rom like LineageOS, where you could potentially install the extension with temporary root like is done for UnifiedNLP here: blog.eowyn.net/unifiednlp/