Add non-system-border option on Windows

Sine Striker

2023-12-22 c837319767bb609c6ec806336e49a347c77b11d3

 examples/mainwindow/CMakeLists.txt

@@ -5,7 +5,7 @@
qwk_add_example(${PROJECT_NAME}
    SOURCES ${_src} mainwindow.qrc ../shared/resources/shared.qrc
    QT_LINKS Core Gui Widgets
    LINKS QWKWidgets QWKStyleSupport WidgetFrame
    LINKS QWKWidgets WidgetFrame
)

set_target_properties(${PROJECT_NAME} PROPERTIES