Add support for autofilling

Hi,

It seems like this is the recommended way to give feedback, so here I go!

I just started using Brave for desktop and so far so good. Unfortunately I have stopped using Brave for iOS however because it doesn’t support autofilling. In particular I’m interested in support for autofilling credit card info, but regular address autofilling would be great too. I think the latter is supported through some three dot menu, but it should work like in Safari where something appears above your keyboard.

Thanks