MQTT client proxying (#2587)

* WIP on MQTT proxy message queue

* Fix copy paste goof

* Progress on uplink

* Has packets

* Avoid trying to connect if we're proxying

* Pointer correctly

* Remove wifi guards

* Client proxy subscribe

* Fixed method that got bababababorked somehow... personally I blame CoPilot

* Short circuit logic

* Remove canned settings

* Missed some stuff in the move

* Guard pubsub client for non-networked variants

* Has networking guard

* else

* Return statement for fall-thru

* More gaurd removals

* Removed source filters. No wonder I was confused

* Bounding

* Scope guard around else and fix return

* Portduino

* Defs instead

* Move macro up to actually fix portduino

* Size_t

* Unsigned int

* Thread interval

* Protos

* Protobufs ref

src/main.cpp

@@ -47,13 +47,12 @@ NRF52Bluetooth *nrf52Bluetooth;
 
 #if HAS_WIFI
 #include "mesh/api/WiFiServerAPI.h"
-#include "mqtt/MQTT.h"
 #endif
 
 #if HAS_ETHERNET
 #include "mesh/api/ethServerAPI.h"
-#include "mqtt/MQTT.h"
 #endif
+#include "mqtt/MQTT.h"
 
 #include "LLCC68Interface.h"
 #include "RF95Interface.h"
@@ -656,9 +655,7 @@ void setup()
         }
     }
 
-#if HAS_WIFI || HAS_ETHERNET
     mqttInit();
-#endif
 
 #ifndef ARCH_PORTDUINO
     // Initialize Wifi