feat: Creation of a rake task to delete duplicated half signup users

[AyakorK]

🎩 Description

This PR adds a rake task that will delete duplicated half signup users, and alert the administrator about the decidim accounts that contains a phone number that might be duplicated in the DB (multiple decidim accounts with the same phone number)

Testing

Describe the best way to test or validate your PR.

You might need to update manually your DB except if you have a dump that has the bug inside of it

• Generate your App

• Access to the db generated with your application

• Access the table decidim-users

• Target a dozen of users that you can easily update (that were not already deleted or blocked on the organization)

• For a multiple case scenarios I would recommend to change 6 users to match the "quick_auth" regex email and to let 6 decidim users with "classic" emails

• For 3 of each, add an identical phone_number with an identical phone_country

• For 1 of each, add an identical phone_number with a different phone_country

• For 2 of each, add a different phone number (different for each of them) regardless the phone_country

• Make sure that when you execute the rake task bundle exec rake decidim:clear_duplicated_user that you have every logs in your stdout

• If you followed the test scenario above :

• Every quick_auth with the same phone_number and same phone_country should have been deleted.

• Decidim users with the same phone_number and same phone_country should have been alerted to you with the last stdout

• Users with an identical phone_number with a different phone_country should not have been alerted to you

• Users with a different phone_number should not have been alerted to you

Tasks

• Add specs
• Create a job that will soft-delete quick_auth half signup accounts and alert about duplicated phone_numbers on decidim accounts if their phone number is duplicated through the DB
• Create a task to execute the new job