[Android] - Add privacy hardening from Mull browser

[HyperCriSiS]

Hi,

I want to suggest that the privacy hardening from Mull browser is added to Waterfox. Everybody should benefit from it.

The needed files are: https://github.com/Divested-Mobile/Mull-Fenix/blob/master/preferences/userjs-arkenfox.js and https://github.com/Divested-Mobile/Mull-Fenix/blob/master/preferences/userjs-brace.js

License: https://github.com/Divested-Mobile/Mull-Fenix/blob/master/preferences/LICENSE-arkenfox

What do you think?

Thanks and regards Hyper