Allow hiding peer count in toolbar

[AndrewBelt]

Is your feature request related to a problem? Please describe.
The peer count number on the toolbar icon can be distracting, and it isn't really important information that users always need to see.

Describe the solution you'd like
An option to hide the peer count in the extension settings would be nice.

Describe alternatives you've considered
I tried setting Status Poll Interval to 0 in the settings, but it doesn't hide the number. Could be a possible alternative to a separate setting.

Additional context

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[lidel]

Agree. We already have plan to remove it: #662 but let's keep this open to ensure there is an option to remove the badge entirely.