Battery Service Server API

src/ble/gatt-service/battery_service_server.h

/**
 * @brief Init Battery Service Server with ATT DB
 * @param battery_value in range 0-100
 */
void battery_service_server_init(uint8_t battery_value);

/**
 * @brief Update battery value
 * @note triggers notifications if subscribed
 * @param battery_value in range 0-100
 */
void battery_service_server_set_battery_value(uint8_t battery_value);