INA3221 sensor: use for bus voltage & environment metrics (#4215)

* use INA3221 for bus voltage; fixes for telemetry variants

- add to sensors available for environment telemetry
  (to report voltage/current)
- add vars to define channels to use for battery voltage
  (for getBusVoltage) and environment metrics (default
  to CH1 for both)
- write to the correct fields on the measurement struct
  depending on the measurement variant, and DRY up the
  sensor measurement collection code a bit
- this might be suitable for a common implementation for
  the INA* sensors in a future PR...

* formatting

* derp

---------

Co-authored-by: Ben Meadors <benmmeadors@gmail.com>

src/modules/Telemetry/EnvironmentTelemetry.cpp

@@ -115,6 +115,8 @@ int32_t EnvironmentTelemetryModule::runOnce()
                 result = ina219Sensor.runOnce();
             if (ina260Sensor.hasSensor())
                 result = ina260Sensor.runOnce();
+            if (ina3221Sensor.hasSensor())
+                result = ina3221Sensor.runOnce();
             if (veml7700Sensor.hasSensor())
                 result = veml7700Sensor.runOnce();
             if (tsl2591Sensor.hasSensor())
@@ -325,6 +327,10 @@ bool EnvironmentTelemetryModule::getEnvironmentTelemetry(meshtastic_Telemetry *m
         valid = valid && ina260Sensor.getMetrics(m);
         hasSensor = true;
     }
+    if (ina3221Sensor.hasSensor()) {
+        valid = valid && ina3221Sensor.getMetrics(m);
+        hasSensor = true;
+    }
     if (veml7700Sensor.hasSensor()) {
         valid = valid && veml7700Sensor.getMetrics(m);
         hasSensor = true;
@@ -499,6 +505,11 @@ AdminMessageHandleResult EnvironmentTelemetryModule::handleAdminMessageForModule
         if (result != AdminMessageHandleResult::NOT_HANDLED)
             return result;
     }
+    if (ina3221Sensor.hasSensor()) {
+        result = ina3221Sensor.handleAdminMessage(mp, request, response);
+        if (result != AdminMessageHandleResult::NOT_HANDLED)
+            return result;
+    }
     if (veml7700Sensor.hasSensor()) {
         result = veml7700Sensor.handleAdminMessage(mp, request, response);
         if (result != AdminMessageHandleResult::NOT_HANDLED)