Fix Monochrome class with new data structure, unit tests. There is work to be done still

src/PtouchPrint.cpp

@@ -150,10 +150,10 @@ int PtouchPrint::run() {
     }
     label->create(labelText);
     label->writeToPng("./testlabel.png");
-    if (!printer->printLabel(std::move(label))) {
+    /*if (!printer->printLabel(std::move(label))) {
         spdlog::error("An error occured while printing");
         return -1;
-    }
+    }*/
 
     return 0;
 }