Support Opera

Hi and thanks for this addon!
This is exactly what I was looking for: I'm annoyed at having to manually clean up links in my emails and on search engines.

Have you investigated how complex it would be to port to Opera? It's a great browser, I started using it instead of Firefox quite some years ago due to embedded vpn and generally higher speed and more polished (my opinion) aesthetics.

No files, tests, or entry points are named. Start by reviewing the JavaScript browser-extension structure and Opera compatibility requirements; done would be a concrete assessment of whether a port is feasible and what changes it requires.

Written by the indexing model from the issue text.