Add Events Firing for Phishing Detection Settings

[not-a-rootkit]

Please review the release process for BrowserServicesKit here.

Required:

Task/Issue URL: https://app.asana.com/0/72649045549333/1208270234071171/f
iOS PR: duckduckgo/iOS#3423
macOS PR: duckduckgo/macos-browser#3379
What kind of version bump will this require?:Minor

Optional:

Tech Design URL: N/A
CC:

Description:
In ✓ Phishing Detection Pixels we defined several pixels to include, and one of them did not make it into the initial release:

• macos.phishing-detection.feature-toggled:
  • Parameters:
    • newState - on/off, indicating whether the user turned it on or off
• Condition
  • triggers when a user disables the feature from the settings page
• Reasoning
  • the aim is to use this as a "do-no-harm" KPI, to determine how many users are actively choosing to disable/enable phishing protection

Steps to test this PR:

1. Point to tespach/phish-det-settings-event
2. Build the macOS browser
3. Filter by m_mac_phishing_detection_setting-toggled in the debug output of the app
4. Ensure you're authenticated via use-login.duckduckgo.com - this feature is internal only
5. Go to Settings>General
6. Toggle "Malicious Site Protection"
7. Return to debug output and ensure you see:
8. 👾[Standard-Fired] m_mac_phishing_detection_setting-toggled ["appVersion": "1.109.0", "pixelSource": "browser-dmg", "setting_toggled_to": "false"]

OS Testing:

• iOS 14
• iOS 15
• iOS 16
• macOS 10.15
• macOS 11
• macOS 12

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Internal references:

Software Engineering Expectations
Technical Design Template