Add RAK12035VB Soil Moisture Sensor

As per @Justin-Mann , the RAK12035 is a Soil Moisture Sensor made by RAKWireless. Up to three can be connected using the wisblock architecture.

meshtastic/telemetry.proto

@@ -561,6 +561,11 @@ enum TelemetrySensorType {
    * Infineon DPS310 High accuracy pressure and temperature
    */
   DPS310 = 36;
+  
+  /*
+   * RAKWireless RAK12035 Soil Moisture Sensor Module
+   */
+  DPS310 = 37;
 }
 
 /*