make entryPoint a header

src/example_apps/MinimalApp/MinimalApp.h

@@ -0,0 +1,32 @@
+#ifndef MINIMALAPP_H
+#define MINIMALAPP_H
+
+#include "pch.hpp"
+#include "utils/App/App.h"
+#include "utils/Module/Module.h"
+
+namespace Archimedes {
+    
+    class MinimalApp : public App {
+
+        private:
+
+            void handleArgs(const int&, char*[]) {};
+
+            void printHelp() {};
+
+        public:
+            MinimalApp();
+            ~MinimalApp();
+
+            void run();
+
+            void stopModule(std::list<Module*>::iterator);
+
+            void startModule(std::string);
+
+    };
+
+}
+
+#endif