imgui移除无用文件依赖

core/application/application.cpp

@@ -73,6 +73,8 @@ void application::shutdown() {
     renderer_ = nullptr;
 
     destroy_glfw();
+
+    g_is_running = false;
 }
 
 std::shared_ptr<texture> application::load_texture(const std::string& path) const {

third_party/imgui/CMakeLists.txt

@@ -23,8 +23,6 @@ if (WIN32)
         imgui/backends/imgui_impl_glfw.h
         imgui/backends/imgui_impl_opengl3.cpp
         imgui/backends/imgui_impl_opengl3.h
-        imgui/backends/imgui_impl_win32.h
-        imgui/backends/imgui_impl_win32.cpp
     )
     target_link_libraries(${PROJECT_NAME} PUBLIC glfw glad)
 elseif(UNIX AND NOT APPLE)