Send local stats telemetry to phone every 15 minutes (#4475)

* Send local stats telemetry to phone every 10 minutes

* Add debug log and bump to 15 minutes

* Tronk

* Explicit has_ optional

src/modules/Telemetry/Sensor/MCP9808Sensor.cpp

@@ -26,6 +26,8 @@ void MCP9808Sensor::setup()
 
 bool MCP9808Sensor::getMetrics(meshtastic_Telemetry *measurement)
 {
+    measurement->variant.environment_metrics.has_temperature = true;
+
     LOG_DEBUG("MCP9808Sensor::getMetrics\n");
     measurement->variant.environment_metrics.temperature = mcp9808.readTempC();
     return true;