Add battery styles and more, (1/2)

Battery styles and "symbols" are ported/inspired from Slimroms:

https://github.com/SlimRoms/frameworks_base/commit/258fd1f68bb1804a1ebf244449e19ae111bb1b7c
https://github.com/SlimRoms/frameworks_base/commit/d9995c632cf1e825beeb13903b8c66a27df9def1

Battery styles include:

 - custom circle color
 - custom text color
 - custom text color, (charging)
 - custom animation speed, (circle)

Additional battery "symbols":

- Dotted circle with percentage text
- Dotted circle without percentage text
- Percentage text without icon

Bug fixes:

 - Fix circle battery symbols doesn`t disappear if checkbox "Show battery status" is deactivated
 - Add charging animation for symbol "Icon and percentage"