UI: Relocate tas menu and add brief description

src/yuzu/main.h

@@ -320,7 +320,7 @@ private:
     QLabel* emu_speed_label = nullptr;
     QLabel* game_fps_label = nullptr;
     QLabel* emu_frametime_label = nullptr;
-    QLabel* TASlabel;
+    QLabel* tas_label = nullptr;
     QPushButton* gpu_accuracy_button = nullptr;
     QPushButton* renderer_status_button = nullptr;
     QPushButton* dock_status_button = nullptr;