New Products/FormSubmision filters and applied_at for tags on Contact

🧪 We have added new filters for different Product resources and the FormSubmission resource:

• FormSubmission -> id, page_id, contact_id
• Products::Collection -> id, visible_in_store, archived
• Products::Price -> id, visible, archived, variant_id
• Products::Tag -> id
• Products::Variant -> id, visible, archived, fulfillment_required
• Product -> id, visible_in_store, visible_in_customer_center

👤 You can now see when a tag was applied to a contact directly in the contacts payload.