Lockscreen: Add battery status ring around unlock ring, (2/2):

Included:

- Enable/disable battery status ring
- Option to load default color values from theme/system
- Display battery status ring dotted/solid
- Customize ring dots, (lenght, interval, offset)
- Custom battery status ring color
- Custom battery status ring charging color

Colors:
While charging, display the charging color.
Without charging and battery status is below 14%, the color turns into red,
otherwise, display the ring color.

Change-Id: I6358200725e2dcbb23e8a029b6235a2194559d6e