Add wizard Contract IBAN Change Force

CHANGELOG:

### ADDED
- [#763](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/763) Add wizard Contract IBAN Change Force

Related card: https://trello.com/c/Q8C9A5PS/1189-for%C3%A7ar-canvi-de-compte-bancari-a-opencell-des-dodoo

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