Bug: when browsing in "in private" / "inkognito" mode, an [anonymized] flag should be stored

[casaout]

Instead of the window title, an [anonymized] should be stored in case the "in-private" mode of a browser is used.

I thought we've implemented this already, but need to check.

[casaout]

• List of incognito terms: https://github.com/HASEL-UZH/PersonalAnalytics/blob/dev-am/src/windows/AM.PA.MonitoringTool/WindowsActivityTracker/Settings.cs#L25C38-L25C61 (could be updated)
• Check if window title should be anonymized (https://github.com/HASEL-UZH/PersonalAnalytics/blob/dev-am/src/windows/AM.PA.MonitoringTool/WindowsActivityTracker/Data/Queries.cs#L131)

[casaout]

Implemented for Firefox and Edge with #20

Todo: implement for other browsers as well. Other browsers don't show the information in the window title, so solutions are not that easy and will probably require a browser extension or similar.