New serial protobuf transport approximately works and is backward

compatiable with the text debug output.

src/SerialConsole.cpp

@@ -0,0 +1,32 @@
+#include "SerialConsole.h"
+#include "configuration.h"
+#include <Arduino.h>
+
+#define Port Serial
+
+SerialConsole console;
+
+SerialConsole::SerialConsole() : StreamAPI(&Port), RedirectablePrint(&Port)
+{
+    canWrite = false; // We don't send packets to our port until it has talked to us first
+    // setDestination(&noopPrint);
+}
+
+/// Do late init that can't happen at constructor time
+void SerialConsole::init()
+{
+    Port.begin(SERIAL_BAUD);
+    StreamAPI::init();
+}
+
+/**
+ * we override this to notice when we've received a protobuf over the serial stream.  Then we shunt off
+ * debug serial output.
+ */
+void SerialConsole::handleToRadio(const uint8_t *buf, size_t len)
+{
+    setDestination(&noopPrint);
+    canWrite = true;
+
+    StreamAPI::handleToRadio(buf, len);
+}