Add USB stub, add logging using spdlog

src/main.cpp

@@ -6,11 +6,13 @@
 #include "Usb.hpp"
 
 #include <libusb-1.0/libusb.h>
+#include <spdlog/spdlog.h>
+
 using namespace ptprnt;
 
 int main(int argc, char** argv) {
 
-    std::cout << "Hello ptprnt!" << std::endl;
+    spdlog::info("Starting ptprnt {}", PROJ_VERSION);
 
     auto usb = std::make_unique<driver::Usb>();
     auto devs = usb->listDevices();
@@ -24,4 +26,5 @@ int main(int argc, char** argv) {
     printer::info info = printer->getInfo();*/
 
     return 0;
-}
+}
+