JSON MQTT Integration (#1283)

* Added downstream JSON MQTT handling.

* Added uplink JSON messaging

* Fixed shadow variable.

* Added missing dependency.

* Fixes Environment -> Telemetry.

* Fixed native issue.

* Added json11 pio reg dependency.

* Fixed json11 library dependency.

Co-authored-by: Sacha Weatherstone <sachaw100@hotmail.com>

platformio.ini

@@ -91,6 +91,7 @@ lib_deps =
   https://github.com/geeksville/ArduinoThread.git#72921ac222eed6f526ba1682023cee290d9aa1b3
   PubSubClient
   nanopb/Nanopb@^0.4.6
+  meshtastic/json11@^1.0.2
 
 ; Used for the code analysis in PIO Home / Inspect
 check_tool = cppcheck
@@ -119,7 +120,7 @@ lib_deps =
   adafruit/Adafruit BME280 Library@^2.2.2
   adafruit/Adafruit BME680 Library@^2.0.1
   adafruit/Adafruit MCP9808 Library@^2.0.0
-  
+
 ; Common settings for ESP targes, mixin with extends = esp32_base
 [esp32_base]
 extends = arduino_base