Simple simulation code

Builds a native program on MacOS that runs the NuEVI firmware compiled for x86_64.
Only input is arrow keys for menu buttons for now. Only output is console and display.

Copied some more library files into the simulation folder, and renamed the modified *.cpp files from the libraries to *_sim.cpp.

simulation/src/simserial.cpp

@@ -0,0 +1,43 @@
+#include <cstdint>
+#include <cstdio>
+
+
+#include "Arduino.h"
+
+/********************************
+ *
+ */
+void SimSerial::begin(uint32_t)
+{
+
+}
+
+
+void SimSerial::print(const char* str)
+{
+	printf( "[Serial::print] %s\n", str );
+}
+
+
+void SimSerial::print(uint32_t intValue)
+{
+	printf( "[Serial::print] %d\n", intValue );
+}
+
+void SimSerial::println()
+{
+	printf("\n");
+}
+
+
+void SimSerial::println(uint32_t intValue)
+{
+	printf( "[Serial::println] %d\n", intValue );
+}
+
+
+void SimSerial::println(const char *str)
+{
+	printf( "[Serial::println] %s\n", str );
+}
+