Feature request: default initialization setting

[nosduco]

Hi,

First off, thank you for developing this! As someone who uses an Audiotechnia mic that does not have an on/off switch, this has been super useful to me as I value privacy and was frustrated with constantly plugging/unplugging my device.

I'd like to request a feature (and I am absolutely open to the idea of submitting a PR for this if warranted).

The feature I'd like to add is a preference on whether the mic should be muted/unmuted on initialization/start-up. (etc, when I turn on my computer, log in to Gnome, the extension is default controlling the mic to be on or off considering the preference set).

Thanks!