Move to new Replicated Files Extension API

[carloscabanero]

The new API fixes all the problems we have previously seen with the previous and it is closer to the ones we have already implemented in other parts of the app.

The current Files.app extension is good enough for most use cases and should continue working. We would like to know how many of you are experiencing issues with it so we can prioritize how urgent the move to the new API is.

So please leave your comments or thumbs up here!

[shlevy]

I'm not able to set a blink-exported location as the default download location for Safari

[carloscabanero]

Yes, this should come through with that.

[jimmy-zhening-luo]

Is the expected behavior that "link-files" does not persist between sessions?