Add shop info to the records

[EmaLoprevite]

Description of change

Add shop info to the records to be able to easily distinguish them among multiple shops.

QA steps

• automated tests passing: the tests include packages (e.g. tap_tester) not publicly available so it is difficult to check them or create new ones;
• manual qa steps passing (list below): sorry, I am not sure where these steps are listed.

Risks

• None, because the three new "sdc" fields appears in the output only if they are selected in the catalog.

Rollback steps

• Revert this branch.

[briansloane]

@EmaLoprevite So that I understand better, can you explain how you would have multiple shop data in one extraction which makes this necessary? I thought that the tap will only extract data for one shop/subdomain.

[EmaLoprevite]

Hi @briansloane, thank you very much for reviewing my PR.
This change is very useful when downloading data from multiple shops and putting everything into a single table via a SQL target; this way the data can be later filtered by shop, otherwise there's no way to know to which shop a specific row in a table belongs.
Of course, that field can be added/selected via the catalog so it doesn't affect the current behaviour.
If you have other questions, please feel free to ask; thank you again.