Create an interactive script to add new components in Weblate

Steps to perform:

1. Add an entry in a translation_list_*.txt file
2. Pull / Rebase new changes into the local repositories (or clone the repo if necessary)
3. Run the call_update.py script to generate the .translation folder
4. Run the generate_components.py script to generate the json components file to be imported
5. Import the components file (e.g. $ weblate import_json --project xwiki-platform components_xwiki-platform.json --update)
6. Install the addons (e.g. $ weblate install_addon --addon xwiki.post_update xwiki-platform/component)