blockAds=true on Firefox

[simion]

Tried blockAds=true when using firefox via playwright websocket. It does not load ublock.

I've looked at the install adblock script and it seems it only downloads the chrome extension.

Ublock also has a .xpi extension for firefox, second items from "assets": https://api.github.com/repos/gorhill/uBlock/releases/latest

[simion]

@joelgriffith i can contribute with this change if you're too busy :D

[joelgriffith]

Yup, would happily review/merge a PR if you have the time :)