Android: include metadata for okular kirigami
Summary:
Include an AndroidManifest.xml file so when it's installed it has a
proper icon and name.
Include appdata information so it can be listed
Reviewers: Okular, mart, aacid
Reviewed By: Okular, mart, aacid
Tags: Okular
Differential Revision: https://phabricator.kde.org/D12299