Refactor Notification Handling and Rename Firebase Service Worker Scope

[gkatrakazas]

This PR introduces several enhancements and refactors to streamline notification handling and improve code clarity. The changes are as follows:

Renaming for Clarity

• Renamed HandlerNotification to NewCredentialNotification for better alignment with its purpose.

Enhanced Notification Listening

• Extracted listenForNotifications logic into a higher-order hook for improved reusability and modularity, and rename it to useNewCredentialListener.
• Updated useNewCredentialListener to use a ref for the getData function, preventing unnecessary re-renders and ensuring consistent behavior.

Improved Service Worker Scope (Related with: #77)

• Renamed the Firebase service worker scope to align with updated functionality and improve maintainability.

Persistent Notification Handling

• Introduced the use of sessionStorage to temporarily store notifications, ensuring they are displayed even after a page reload or redirection.

Fixes and Refinements

• Resolved an issue to ensure continuous listening for notifications without requiring a page reload.
• Refactored service worker background notification click handling to improve maintainability and functionality.

Benefits

• Improved Code Clarity: Renaming components and hooks for more descriptive and intuitive usage.
• Better User Experience: Persistent notifications prevent loss of critical updates during page reloads or navigation.
• Enhanced Maintainability: Refactored hooks and service worker logic simplify future updates and debugging.