appimage: Use the split gpgme packages
* configure.ac: Add packages gpgmepp and qgpgme. Update dependencies of packages previously depending on the combined gpgme package. * src/Makefile.am (appimage_kdepkgs): Add gpgmepp and qgpgme. (appimage_pkg_gpgme_configure): Update the configure options. (appimage_pkg_qgpgme_configure): New.
The AppImage can/must now be built with the split gpgme packages, i.e.
gpgme, gpgmepp, and qgpgme.
- GnuPG-bug-id: T7262