Add images to make up the value of capacity to make the size of
text bigger.
Also adds support display capacity text on four direction:
- if the resolution of charging animation image is horizontal,
the capacity text display on the top of charging animation image,
but on the bottom if CHARGER_CAPACITY_TEXT_ROTATE_180 is selected;
- and if the resolution of charging animation image is vertical,
the capacity text display on the right of charing animation image,
but on the left if CHARGER_CAPACITY_TEXT_ROTATE_180 is selected.
Signed-off-by: Firefly <service@t-firefly.com>