📝 Add fusuma link

Author: Schneegans

src/content/docs/opening-menus.mdx

@@ -79,6 +79,7 @@ Most of them are free and open-source.
    * [BetterMouse](https://better-mouse.com/) is a tool which allows you to remap mouse buttons to keyboard shortcuts.
   </TabItem>
   <TabItem label="Linux" icon="linux">
+   * [fusuma](https://github.com/iberianpig/fusuma) together with it's [sendkey plugin](https://github.com/iberianpig/fusuma-plugin-sendkey?tab=readme-ov-file) can be used to open a Kando menu with touchpad or touchscreen gestures. It works on **X11** and **Wayland**.
    * [Input Remapper](https://github.com/sezanzeb/input-remapper) is a tool which allows you to remap mouse buttons to keyboard shortcuts. It works both on **X11 and Wayland**.
    * [Touchegg](https://github.com/JoseExposito/touchegg#readme) is a multitouch gesture recognizer for Linux. You can use it to open a Kando menu with touchpad gestures. It only works on **X11**.
    * **KDE Plasma** comes with built-in support for remapping mouse buttons to keyboard shortcuts. You can find [this feature](https://www.phoronix.com/news/KDE-Rebind-Extra-Mouse-Buttons) in the system settings under "System Settings" / "Mouse & Touchpad" / "Add Binding".