Streamlining Subscription Management in devlog-ist/landing

Managing subscriptions and invoices can be a cumbersome process. In the devlog-ist/landing project, which focuses on providing a user-friendly landing experience, we've recently added a dedicated billing page to simplify these tasks for our users. The Challenge Previously, users had limited access to their subscription details and invoice history, making it difficult to manage their accounts effectively. This lack of transparency led to user frustration and increased support requests. The Solution To address this, we introduced a new Billing page accessible under the Settings section. This page provides users with the following capabilities: View their current subscription plan. Cancel or resume subscriptions. Download past invoices in PDF format. To handle the invoice downloads, a BillingController was implemented, leveraging Cashier (if applicable) to generate the PDF invoices. Implementation Details The new billing page integrates with the existing authentication and authorization m