Add battery status styles, (1/2):

Based on SlimRoms:
https://github.com/SlimRoms/frameworks_base/commit/09052553399741defd000b8886e39bc8beb9afd7
https://github.com/SlimRoms/frameworks_base/commit/2f371c90b034c56264c5a258e6ac83242c3aac52
https://github.com/SlimRoms/frameworks_base/commit/694aee53c058f8d6e7666803a9f8c28abb1d243c

Included:

- Show/hide battery status
- battery status styles:
  - Symbol
  - Percentage text
  - Circle
- Show/hide percentage text,
  (Symbol and Circle)
- Custom frame color option,
  (enabled: custom color, disabled: battery status color with 80% transparency)
- Circle dotted/solide
- Custom dot length
- Custom dot interval
- Custom dot offset
- Battery status color
- Frame color
- Percentage text color
- Percentage text charging color