Add object/remote temperature and particulate matter sensor types

[brentru]

Adding Sensor Types for:

• Particulate matter concentration
  • via https://github.com/adafruit/Adafruit_PM25AQI/blob/master/Adafruit_PM25AQI.h#L30
• SENSOR_TYPE_OBJECT_TEMPERATURE for Thermocouples which expose both ambient and "remote"/"object" temperature via https://github.com/adafruit/Adafruit_Sensor/blob/master/Adafruit_Sensor.h#L66 cc @lorennorman