Preeliminary rpi2040 support (arduino-libraries#52)

* Preeliminary support for RPI 2040 NANO Connect.

* Adding missing closing brace.

* Top-level include of <Arduino.h> solves missing macro "F()"

Author: aentinger

src/Arduino_ConnectionHandler.h

@@ -18,6 +18,8 @@
 #ifndef ARDUINO_CONNECTION_HANDLER_H_
 #define ARDUINO_CONNECTION_HANDLER_H_
 
+#include <Arduino.h>
+
 #ifdef ARDUINO_SAMD_MKR1000
   #include <WiFi101.h>
   #include <WiFiUdp.h>
@@ -30,7 +32,7 @@
 #endif
 
 #if defined(ARDUINO_SAMD_MKRWIFI1010) || defined(ARDUINO_SAMD_NANO_33_IOT) || \
-  defined(ARDUINO_AVR_UNO_WIFI_REV2)
+  defined(ARDUINO_AVR_UNO_WIFI_REV2) || defined (ARDUINO_NANO_RP2040_CONNECT)
   #include <WiFiNINA.h>
   #include <WiFiUdp.h>