Adds use of CHARGER_PROP_DISCHARGE_CURRENT_NOTIFICATION and
CHARGER_PROP_SYSTEM_VOLTAGE_NOTIFICATION_UV to the charger
sample application.
Signed-off-by: Ricardo Rivera-Matos <rriveram@opensource.cirrus.com>
Moves the charger API sample app from samples/charger/ to
samples/drivers/chargers/ as mentioned in issue #65032.
Signed-off-by: Ricardo Rivera-Matos <rriveram@opensource.cirrus.com>