[Feature Request]: option to hide window when app is deactivated

[ericestes]

Preflight Checklist

• I have read the Contributing Guidelines for this project.
• I agree to follow the Code of Conduct that this project adheres to.
• I have searched the issue tracker for a feature request that matches the one I want to file, without success.

Problem Description

There is currently no option to hide a window when its app is not active. This is important for, for example, utility or info panels.

Proposed Solution

Expose the hidesOnDeactivate window option (https://developer.apple.com/documentation/appkit/nswindow/1419777-hidesondeactivate)

This normally defaults to true for NSPanel windows, but it looks like the BrowserWindow panel type is still an NSWindow and so does not get this behavior.

Alternatives Considered

You could show the panel on the app's activate event, but there is no corresponding deactivate event. You could listen to every window's blur event, but this can become clunky especially when the functionality exists natively.

Additional Information

No response