Issue-1161: Debugging Settings: support sending notification to multiple email accounts

[renatonascalves]

Summary

Fixes #1161

This PR addresses the need to support sending debugging notifications to multiple email accounts as outlined in the issue #1161. It introduces functionality allowing the addition of multiple email addresses in the Developer Tools settings.

Description

The Developer Tools currently only support sending debugging information to a single email address. This enhancement allows for multiple users, each with different email addresses, to receive debugging notifications.

Use Case

This change is crucial for teams where multiple individuals need access to debugging notifications to ensure smooth development and troubleshooting processes.

Changes Made

• Modified the handling of the debugging notifications setting to support multiple email addresses.
• Updated the UI in the Developer Tools section to allow for the entry of multiple email addresses.

Acceptance Criteria

• Allow adding, and sending, debugging notifications to multiple email addresses.

Testing

1. Navigate to the Developer Tools settings.
2. Add multiple email addresses to the debugging notifications field.
3. Trigger a debugging event.
4. Verify that all specified email addresses receive the debugging notification.

Additional Notes

A apple_news_notification_headers hook exists for developers, but this update provides a more user-friendly approach for non-technical users as well.

[manewc]

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