Sources: Add user-defined cursor for incremental syncs in Hubspot Source

[vai-airbyte]

Describe the feature request
We’d like the HubSpot connector to support user-defined cursor fields for Incremental Syncs, instead of being limited to the source-defined cursor (updatedAt).

Describe the solution you'd like
The use case is they are using HubSpot workflows (automation done inside the HubSpot itself) that calculates specific properties on a daily basis for Incremental sync and with updatedAt as the cursor, the current incremental sync is effectively a full refresh sync. We should be able to specify our own cursor.

Describe alternatives you've considered
We have discussed alternative solutions like forking the Hubspot connector and having the CRM team define another timestamp column which reflect business properties rather than calculated properties. But because it was built on the CDK, we were receiving an error and would prefer for this to be prioritized in the roadmap.