Upgrade Subscription create view

🧩 Problem Statement

The current subscription create page does not align with modern UI/UX standards.

💡 User Story

As a platform user,

I want a modernized creation subscription page with a clean, consistent, and intuitive layout,

so that I can quickly manage data without confusion or unnecessary steps.

🎯 Definition of Done (DoD)

- Modernize subscription create page with the latest UI/UX standards.