Quick shortcuts to most recent share destinations

Some apps, Firefox for example, remember the last one or two share destinations, and present those to the user as separate buttons next to the share button. This would be useful in this app. See screenshot of Firefox menu with Flashify and NewTube as last two share destinations I picked.

Start by running the Android app and reviewing the existing screenshot share action and its menu, using the Firefox screenshot in the issue as the reference. Implement buttons for the one or two most recently selected share destinations, and verify that they update after sharing and remain separate from the standard share button.

Written by the indexing model from the issue text.