Serial Mode for Ecowitt WS85 weather station. (#4296)

* protobufs

* initial mods, not tested

* manual telem packet creation, compiles.

* add gust and lull computation

* telem packet is getting fired off

* new pb ?

* pb and gust lull

* need to set the variant type for it to work.

* add gust and lull to mqtt json output.

* parse bat voltage and cap voltage and send the larger of the two in telem packet

also use the new ws85 serial mode (6).  must set it with cli. : meshtastic --set serial.mode 6

* set hard coded average/transmit interval to 5 minutes.

* proper direction averging with trig.

* Update protobufs

* sweep some crud

* read in 512 bytes at a time and break and clear serial input if we got wind data

* factor out sendTelemetry function

* Revert "factor out sendTelemetry function"

This reverts commit b61ba1a3c5.

* Reapply "factor out sendTelemetry function"

This reverts commit d0af9cfd7d.

* update protobufs

* put WS85 Serial2 is tcho and canaryone exclusion #ifdef

* include GeoCoord.h so dr-dev will compile.

* remove old TODO comment.

* breakout WS85 serial operation to it's own function called processWXSerial()

* canaryone and t-echo exclusion for Serial2

---------

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

src/modules/SerialModule.h

@@ -28,6 +28,8 @@ class SerialModule : public StreamAPI, private concurrency::OSThread
 
   private:
     uint32_t getBaudRate();
+    void sendTelemetry(meshtastic_Telemetry m);
+    void processWXSerial();
 };
 
 extern SerialModule *serialModule;