Switches to the new build system (#87)

* Removes old build system

* Removes old gmock

* Adds new gmock

* Moves source files to new locations

* Adds new build system

src/dev/native/cpp/main.cpp

@@ -0,0 +1,6 @@
+#include <iostream>
+#include "cscore.h"
+
+int main() {
+    std::cout << cs::GetHostname() << std::endl;
+}