Add a periodic watchdog reset

Author: mikee47

samples/Basic_Tasks/app/application.cpp

@@ -51,6 +51,14 @@ void hwTimerDelegate(uint32_t count)
 
 	lastCount = count;
 	timer.start();
+
+#ifdef ARCH_ESP32
+	/*
+	 * The task queue gets hammered very hard, with no idle time.
+	 * We need to occasionally reset the watchdog timer just to let the system know everything's OK.
+	*/
+	WDT.alive();
+#endif
 }
 
 void IRAM_ATTR hwTimerCallback()