Send custom hubspot fields #771
Description
Is your feature request related to a problem? Please describe.
I expect to be able to sync across custom fields in hubspot (i.e. hubspot deal)
Describe the solution you'd like
The ability to sync custom fields for the Hubspot destination. That is, sync over more than simply the default fields provided for Hubspot Deal.
When clicking add mapping in the sync configuration I would like the dropdown that appears when you click "Select field from hubspot" to include all attributes associated with that particular object.
Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.
Additional context
