add testing infrastructure

src/App.cpp

@@ -0,0 +1,18 @@
+
+#include "App.hpp"
+
+void App::run() {
+
+    std::cout << "im an app and im running !!" << std::endl;
+
+    (void)foo();
+
+    return;
+
+}
+
+int32_t App::foo() {
+
+    return 12;
+
+}