Support user interaction on Files.app and Code integrations

[carloscabanero]

The original idea was that many flows that require reconnection should make use of keys or passwords and require no interaction from the user to avoid interruptions. It also complicates code a lot, because something that is a background process all of a sudden needs to have some type of communication with a foreground process.

It looks like with the new WebAuthn keys, we have no alternative if we want to support this flow for them. As keys will be synchronized between multiple devices, they may become more important. OTOH, we may already have enough types of keys and this may not even be an issue.

Let us know what you think