Add new shared bond option with mobile tariff change wizard
CHANGELOG:
### Changed
- [#1045](https://git.coopdevs.org/coopdevs/som-connexio/odoo-somconnexio/-/merge_requests/1045) feat(ContractMobileTariffChangeWizard): Add new shared bond option
Related card: https://trello.com/c/cej11rYA/1638-odoo-canvi-de-tarifa-manual-wizard
Edited by Gerard Funosas