fix: also move the windows include for windows build

app/framelesswindow.cpp

@@ -1,7 +1,12 @@
 #include "framelesswindow.h"
 
+#include <QApplication>
 #include <QVBoxLayout>
 
+#ifdef _WIN32
+#include <windows.h>
+#endif // _WIN32
+
 FramelessWindow::FramelessWindow(QWidget *parent)
     : QWidget(parent)
     , m_centralLayout(new QVBoxLayout(this))

app/mainwindow.cpp

@@ -26,10 +26,6 @@
 #include <QMimeData>
 #include <QWindow>
 
-#ifdef _WIN32
-#include <windows.h>
-#endif // _WIN32
-
 MainWindow::MainWindow(QWidget *parent) :
     FramelessWindow(parent)
 {