Description of problem:
Currently we don't have a good way to install langpacks after
Live installation. A simple solution that would work for different
Live images and desktop environments would be for Anaconda to
install the langpack meta packages for selected languages
after the Live image has been installed to disk.
One possible way to do this might be to include the meta-package rpms
on the Live image and install them after the main image has been written.
Though better would be to do a dnf transaction to pull in relevant
langpacks (primarily libreoffice at present).

Steps to Reproduce:
1. Install Fedora Live image

Actual results:
No langpacks installed

Expected results:
Langpack meta package (and langpacks) for selected language to be installed.

Additional info:
In theory this could also be done in initial-setup,
but Workstation does not use initial-setup.