Rationalize task type names

As of today, there is no naming convention for task types, so we have:

• indexer_fossology_license & friends,
• origin-update-git and friends,
• swh-deposit-archive-checks (...)
• swh-lister-debian (...)
• swh-vault-cooking

It would be nice to have a common naming scheme there.

Actions to take:

• rename old task names to new ones in swh codebase
• add new task types in production database
• tag and deploy impacted components:
  • swh-lister
  • swh-scheduler
  • swh-deposit
  • swh-web
  • swh-vault
  • swh-indexers
• rename type column in production task table
• restart scheduler runner (stopped to ease data migration) ~> that needed a fix (hot for now), a diff is on its way
• remove sql code to keep backward compatibility task names in swh-scheduler

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Migrated from T1508 (view on Phabricator)