Feat: Bank utils
CHANGELOG:
### Added
- [#1143](https://git.coopdevs.org/coopdevs/som-connexio/odoo-somconnexio/-/merge_requests/1143) Example text
Related card: https://trello.com/c/2KnG4Ih7/1761-revisar-validaci%C3%B3-creaci%C3%B3-manual-iban
CHANGELOG:
### Added
- [#1143](https://git.coopdevs.org/coopdevs/som-connexio/odoo-somconnexio/-/merge_requests/1143) Example text
Related card: https://trello.com/c/2KnG4Ih7/1761-revisar-validaci%C3%B3-creaci%C3%B3-manual-iban