Split the email address section to: Billing email address Main access email address

🔍 Problem Statement

Customer accounts only have a single email address field. Organisations that need to distinguish between a billing email and a main access email have no structured way to do so — they must use metadata or notes as workarounds.

💡 User Story

As a Pelcro admin, I want separate billing and access email address fields on the customer profile, so that invoices and login credentials can be directed to different addresses when needed.

🎯 Definition of Done (DoD)

A feature is done when:

✔️ Given a customer profile, when an admin sets separate billing and access email addresses, then invoices are sent to the billing email and login/access communications are sent to the access email.