build script: install generic Info.plist in static frameworks

Merged Felix Paul Kühne requested to merge fkuehne/VLCKit:3.0-fix-carthage into 3.0

This is needed to please an install-time check by Carthage (fixes #462 (closed)). Note that the Info.plist file by DynamicTVVLCKit is the most generic, so it was used here. This is fixed in a cleaner fashion in v4

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