Prompt the user before opening a website with an external application

[Lululalu]

Why/User Benefit/User Problem

Firefox users tend to be more privacy conscious, so redirecting them to another app without consent may not be the best behavior. I suggest the Samsung Internet's approach of asking the user before opening any website with an external application (when the corresponding app is installed).

What / Requirements

A pop-up asking something like "do you want to open thiswebsite.com with it's external application?" (In the case thiswebsite.com has an app installed on the device)

Acceptance Criteria (how do I know when I’m done?)

When touching a YouTube link on Google for example, the user is asked whether they want to open it on Fenix or other app.

┆Issue is synchronized with this Jira Task

[csadilek]

Moved to bugzilla: https://bugzilla.mozilla.org/show_bug.cgi?id=1809956

Change performed by the Move to Bugzilla add-on.