Add a screenshot of the application settings screen to F-Droid

[Korb]

F-Droid currently provides screenshots of the app's main screens, but not its settings. This may give the impression that, for example, the application does not support displaying atmospheric pressure in millimeters of mercury (this is the standard adopted in the countries of the former Soviet Union and its former satellites). And the majority of residents of these countries have no idea how pascals relate to mmHg. Not to mention the conversion of one unit into another in the mind.