macOS: Setup translations for InfoPlist.strings

macOS 10.14 SDK forces use to provide reasons (user strings) why we use camera or audio access. This needs to be provided inside the InfoPlist as strings for keys NSCameraUsageDescription, etc.

We should translate those somehow. Currently, looks like InfoPlist.strings needs to be translated, so far I see no way to set those at runtime (grabbing them from the .po files).

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