extend test coverage to all supported mimetypes for taglibextractor
Summary:
Add new test files such that all mime types declared as
supported by the taglibextractor are actually tested.
The new test files were created from the existing files
and converted with ffmpeg or the official Monkey's
Audio encoder, which is free for any usage.
Test Plan: new tests pass
Reviewers: mgallien, bruns, svuorela
Reviewed By: bruns
Subscribers: kde-frameworks-devel, Baloo
Tags: Frameworks, Baloo
Differential Revision: https://phabricator.kde.org/D15833