[Feature Proposal] introducing a Battery Bar

(Issue title)

[Feature Proposal] Introducing a Battery Bar

Summary

The Battery Bar could be an alternative to the battery logo indicating the the battery level. It would save the space for the logo, be more precise and non intrusive.

Here an example: https://play.google.com/store/apps/details?id=com.bhanu.batterybarfree

The Battery Bar could be placed at the top of the screen as a thin line (for notched phones, the line could just go around the notch or being placed at the bottom alternatively

• The thickness and color of the bar should be modifiable
• it should change the color or notifiy in a different manner when the device is charging