User Style scripts

[LovecraftianGodsKiller]

Preliminary checklist

• I have read the README
• I have read the FAQs.
• I have searched existing issues for my feature request. This is a new issue (NOT a duplicate) and is not related to another issue.
• This is a feature request for the Bromite browser; not the website nor F-Droid nor anything else.

Is your feature request related to privacy?

Yes

Is there a patch available for this feature somewhere?

Not exactly sure what is meant by patch, but here is the source code for the Stylus extension, Licensed under GPL-3.0, guessing this could be forked and modified to work with or in bromite

Describe the solution you would like

Being able to add user style scripts like what the extension stylus does

Describe alternatives you have considered

Either adding full support for extensions or just adding support for user style scripts