Reading/Multimedia/Code review backlog

bawolff-patches needing review
{{#invoke:Code review backlog|build_list|title=Metadata API| https://gerrit.wikimedia.org/r/78926|Hook definition}|| https://gerrit.wikimedia.org/r/78162|Support for multiple languages|| https://gerrit.wikimedia.org/r/67047|Parser function|| https://gerrit.wikimedia.org/r/78815|API module for common metadata|| https://gerrit.wikimedia.org/r/80403|Commons-specific extension|| }}