Add new interface Debug.Pid.Thermal/Power

- According to the issue#27, adding new interface to record the driver
sensor name, driver sensor value and PID loop result to dbus.

interface:
Debug.Pid

Add new interface Debug.Pid.Thermal/Power

- According to the issue#27, adding new interface to record the driver
sensor name, driver sensor value and PID loop result to dbus.

interface:
Debug.Pid.ThermalPower => Record the sensor name and reading with the
highest temperature or power in the input
list. And record the result of pid loop

Debug.Pid.Zone => Record the pid config name that that is driving the
fans

refs:
https://github.com/openbmc/phosphor-pid-control/issues/27

Change-Id: I67051616958e07c148eabee658165082855c674d
Signed-off-by: Harvey Wu <Harvey.Wu@quantatw.com>

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