ADD_sepa_direct_debit_mandatory_subscr_request_flow

If the product_share used for Mandatory Shares have a Payment Mode that is 'sepa_direct_debit', then:

• The public forms become_cooperator and become_company_cooperator will ask for a bank account and for mandate authorization.
• SR will be created and validated following the already existing behavior that we implemented on voluntary shares related to bank account, payment mode and bank mandate.
• The 1st confirmation email will add the fields iban and mandate authorization.
• The 2nd enail (on validation SR) will advise about a imminent receipt draft will be issued to the bank account.

It is related to this card.

Caution with translations --> This MR have some translations that are implemented throw 3 *.po files located under folder i18n_extra and are translations related with elements inside email_templates of cooperator module. In this case, in order to get it applied, after upgrade the energy_community module we must:

1. locate the ir_model_data records that belongs to those mail templates and proceed to set the field noupdate to False ( the target xml_ids are: 'email_template_confirmation, email_template_release_capital, email_template_certificat. You can do that using the Odoo UI or launching this order on psql over ddbb odoo: update ir_model_data set noupdate = False where name in ('email_template_confirmation', 'email_template_release_capital', 'email_template_certificat');.

2. proceed to manually import (from Odoo UI) the 3 *.po files