Adds useful things to the GetPicklistValuesBulkified

[renatoliveira]

• Adds prettier to the project in this folder.
• Adds logging level to debug statements.
• Adds a 'ok' and 'message' field to the response so that the failure can be handled gracefully within the flow.
• Adds labels to the return value.
• Adds extra test and renames them to both situations they test.

I've seen the message on SFXD to add the record type option (which explains my branch's name), but that is not possible without making a callout, as pointed by other users (for now, that is: https://ideas.salesforce.com/s/idea/a0B8W00000GdVwoUAF/getting-picklist-values-based-on-record-type).

Meanwhile I've added some things to the action that might be useful to the end user.