Add product ba mm attribut to fiber data

CHANGELOG:

### Add
- [#1048](https://git.coopdevs.org/coopdevs/som-connexio/odoo-somconnexio/-/merge_requests/1048) Add product ba mm attribut to fiber data

Related card: https://trello.com/c/5QLSGlLb/1670-nova-informaci%C3%AD-al-ticket-de-fibra

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⚠ This MR needs https://git.coopdevs.org/coopdevs/som-connexio/otrs-somconnexio/-/merge_requests/236 ⚠