Migrate to new transifex Go client
The current python tx client is deprecated : https://github.com/transifex/transifex-client#the-new-client-
We need to move to the new one, written in Go before November 2022: https://github.com/transifex/cli#migrating-from-older-versions-of-the-client . This is the time to switch to auto detect "locale" instead of listing all of them in the config.