Contact API sorting and time-based filtering

Business problem

Currently, the contacts API endpoint lacks support for sorting or filtering by creation or update timestamps. Additionally, the absence of contact-specific webhooks forces users to fetch all contact records and perform manual comparisons to identify changes, leading to inefficient data synchronization and excessive API consumption.

Wished result

A mechanism to retrieve only contacts that have been created or modified since a specific timestamp. This could be achieved by adding support for sorting and filtering by 'created_at' and 'updated_at' fields on the contacts endpoint, or by introducing webhooks that trigger specifically for contact updates.