add App& member to Module class

modules/print/src/print.cpp

@@ -1,7 +1,6 @@
 #include "print.h"
 
-Print::Print(void* h) {
-    handle = h;
+Print::Print(void* h, App& a) : Module(h, a) {
     name = "Print";
 }
 
@@ -12,6 +11,6 @@ Print::~Print() {
 void Print::run() {
     std::cout << "Print lib loaded and run!\n";
     //App::Get().unload(self);
-    App::Get().end();
+    app.end();
     std::cout << "App::Get() called\n";
 }