Add Opera Support

[bajsapan]

Hey i Would really appreciate if you guys would add opera support (I can help a little (if it's not hard)) Thanks!

[PJ-Oscheh]

Hey!

I'll try to look into adding Opera support. Recently I've been kinda busy and haven't had much time to work on this.

Given Opera is a chromium-based browser, it shouldn't be too difficult to implement.