Own Linux title callback and trim Win32 key state

linux/src/main.cpp

@@ -66,6 +66,9 @@ int main(int argc, char** args)
         return 1;
     }
     pp::platform::legacy::set_legacy_glfw_window(wnd);
+    pp::platform::linux_desktop::set_fps_title_callback([wnd](std::string title) {
+        glfwSetWindowTitle(wnd, title.c_str());
+    });
 
     glfwSetCursorPosCallback(wnd, [](GLFWwindow* wnd, double x, double y){
         g_cursor_pos = glm::vec2(x, y);
@@ -129,6 +132,7 @@ int main(int argc, char** args)
     app.ui_thread_stop();
     app.render_thread_stop();
     app.terminate();
+    pp::platform::linux_desktop::set_fps_title_callback({});
 
     return 0;
 }