Upgrade python-scraperlib to 3.x, including CLI support for description / long_description flags

[benoit74]

Python scrapers must be updated to use python-scraperlib 3.x

At the same time, they must:

• add (if not already present) CLI parameters to set description + long_description
• use the shared logic of Add support for handling description and long_description python-scraperlib#110 to handle these fields

For every scraper, do not forget to also update Zimfarm configuration to add these new CLI parameters + set type (input or textarea) + maximum length.

This is an overview ticket, works has to be done in the individual scrapers:

• Use python-scraperlib shared logic to handle description and long_description kolibri#50 (upgrade to 3.x already done)
• Use python-scraperlib shared logic to handle description and long_description nautilus#64 (upgrade to 3.x already done)
• Upgrade python-scraperlib to 3.x, including CLI support for description / long_description flags openedx#181
• Upgrade python-scraperlib to 3.x, including CLI support for description / long_description flags gutenberg#188
• Upgrade python-scraperlib to 3.x, including CLI support for description / long_description flags ted#148
• Upgrade python-scraperlib to 3.x, including CLI support for description / long_description flags sotoki#290
• Upgrade python-scraperlib to 3.x, including CLI support for description / long_description flags freecodecamp#13
• Upgrade python-scraperlib to 3.x, including CLI support for description / long_description flags zimit#202
• Upgrade python-scraperlib to 3.x, including CLI support for description / long_description flags ifixit#92
• Upgrade python-scraperlib to 3.x, including CLI support for description / long_description flags youtube#175
• Upgrade python-scraperlib to 3.x, including CLI support for description / long_description flags wikihow#149