Voltage and Current Sensors support with PDDF

[michaelc-nexthop]

Why I did it

Sensormon is currently not integrated with PDDF. Adding voltage and current sensor monitoring with PDDF support in order to expose system-level current and voltage readouts from peripheral sensors.
Fixes #17032

Work item tracking

• Microsoft ADO (number only):

How I did it

Implement pddf parsing for current and voltage sensors, as well as pddf_voltage_sensor and pddf_current_sensor classes.

How to verify it

Run commands "show platform voltage" and "show platform current".
Should see "Sensor not detected" for platforms that do not have current/voltage sensors implemented.
For platforms that do have it implemented, should see an output like this:

admin@sonic:~$ show platform voltage
    Sensor     Voltage    High TH    Low TH    Crit High TH    Crit Low TH    Warning          Timestamp
----------  ----------  ---------  --------  --------------  -------------  ---------  -----------------
POS0V75_S0    749.0 mV        825       674               0              0      False  20250409 21:00:23
POS0V75_S5    747.0 mV        825       674               0              0      False  20250409 21:00:23
POS0V78_S0    781.0 mV        858       701               0              0      False  20250409 21:00:23
    POS1V0    998.0 mV       1100       899               0              0      False  20250409 21:00:23
 POS1V0_A7    996.0 mV       1100       899               0              0      False  20250409 21:00:23
 POS1V1_S0   1101.0 mV       1200       990               0              0      False  20250409 21:00:23
 POS1V2_A7   1191.0 mV       1320      1080               0              0      False  20250409 21:00:23
 POS1V8_A7   1796.0 mV       1979      1619               0              0      False  20250409 21:00:23
 POS1V8_S0   1811.0 mV       1979      1619               0              0      False  20250409 21:00:23
 POS1V8_S5   1796.0 mV       1979      1619               0              0      False  20250409 21:00:23
    POS3V3   3312.0 mV       3630      2970               0              0      False  20250409 21:00:23
 POS3V3_S0   3370.0 mV       3630      2970               0              0      False  20250409 21:00:23
 POS3V3_S5   3298.0 mV       3630      2970               0              0      False  20250409 21:00:23
    POS5V0   4978.0 mV       5500      4500               0              0      False  20250409 21:00:23
 POS5V0_S0   5030.0 mV       5500      4500               0              0      False  20250409 21:00:23
   POS12V0  12397.0 mV      13199     10800               0              0      False  20250409 21:00:23

Which release branch to backport (provide reason below if selected)

• 201811
• 201911
• 202006
• 202012
• 202106
• 202111
• 202205
• 202211
• 202305

Tested branch (Please provide the tested image version)

Description for the changelog

Link to config_db schema for YANG module changes

A picture of a cute animal (not mandatory but encouraged)

[linux-foundation-easycla]

• ✅login: michaelc-nexthop / (5272398)

The committers listed above are authorized under a signed CLA.

[mssonicbld]

/azp run Azure.sonic-buildimage

[azure-pipelines]

Azure Pipelines successfully started running 1 pipeline(s).

[judyjoseph]

@FuzailBrcm to have broadcom team review as well

[michaelc-nexthop]

@judyjoseph @FuzailBrcm any updates on this? Thanks

[FuzailBrcm]

Changes look good to me

[geans-pin]

There is a typo error in line 27. The self.display_name = self.sensor_data.get should change to self.display_name = self.sensor_obj.get

[michaelc-nexthop]

Fixed in #22997