Initial read: query to get all fields

[rodireich]

Formulate a query or API call to retrieve all fields in document.

[akashkulk]

I believe we are already querying all the fields in the document - and then filtering them out based on the fields in the catalog. This change would just involve NOT filtering these fields out in packed mode

• Initial Snapshot : Code Link. Then, we use this method to strip the fields not in the catalog. However, there is an override already defined to allow all fields.
• Incremental Load (from the OpLog) : Unlike in Relational mode, there is no filtering of data fields through debezium. The codepath to parse this data into an airbyte type is similar to the initial snapshot case.