Contracts/Members count API
CHANGELOG:
### ADDED
- [#543](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/543) Contracts/Members count API
Edited by Pelayo García
CHANGELOG:
### ADDED
- [#543](https://gitlab.com/coopdevs/odoo-somconnexio/-/merge_requests/543) Contracts/Members count API