Add support for extracting array type query data from blocks

[theodesp]

Description

Certain types of blocks have an array type of attribute which means that there is a nested object types that we need to extract.
Currently we do not support those so we want to provide this functionality as well.

For example:

• CoreGallery
• CoreTable

Technical notes

• The code to detect the attribute type here should also handle the array type.
• This should be a recursive step since it can have many levels of inner attributes.