Expose subscription list for uBlacklist

[corvec]

Is your feature request related to a problem? Please describe.
I read iorate/ublacklist#370 on the uBlacklist repo and realized that it would be solved if the site list this extension uses was available as a subscription file.

As this extension is Chrome only, Firefox users are unable to benefit from the work put in to curate the site list. Additionally, Chrome users who already have uBlacklist installed would need to install a second extension to benefit from it.

Describe the solution you'd like
I'd like a uBlacklist subscription file comprising the sites to be added to this project, e.g., as a file named sites_ublacklist.txt in the root of the repo.

Describe alternatives you've considered
I could create such a subscription file myself and house it in my own repo. I could also submit it as a PR to this project or to the rjaus/awesome-ublacklist project.

Additional context

• This project's site list
• uBlacklist project
• awesome-ublacklist subscriptions project
• For a specific example, compare domains_uBlacklist.txt to domains.txt (both from the "AliExpress Fake Site Blocker" project)