CREATE & UPDATE Operations - Two-Way Binding & Forms

[MJSuttles]

• [x] Implement UPDATE: Enable editing existing data and updating it in Firebase.
• [x] Implement two-way data binding in forms (real-time input reflection).
• [x] Listen for input changes and update state accordingly.
• [x] Ensure forms are fully functional for both creating and updating items.
• [x] Ensure all CRUD operations work with user-specific data.