Don't show zero values in the menubar

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## -- **__ I would like to see a toggle in the settings that would allow for the 'zeroed out' or unused icons to go away, just like sailing, or heat warning does, particularly with the options that have to do with charging. I'd like to see the wattage I get when the device is plugged into a charger, but I do not need it to show me 0W when the cable is off, nor do I feel like changing it in settings every single time. The same goes for battery drainage/charge power; if it's 0W, I don't need to see it. Same with the "Time to FULL CHARGE/DEAD BATTERY" <- timer.__**

### -- **__The "--" is also not very needed. I see it as a useful "upgrade" as the space on those MacBooks' menu bar - with the cutout - is very scarce. Especially if someone is rocking a lower resolution, which those Macs recommend by default. __**

**Describe the solution you'd like**
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## -- **__Adding a toggle in the settings that would automatically hide any "--", "O W", or otherwise unused icon - in the menu bar.
**Describe alternatives you've considered**
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### - __None really, you guys already do it with other icons, like heat warning, sailing etc.__
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