补充 #24 ，用下面的 hammerspoon 配置可以用快捷键提示当前的音量

```lua
-- Function to print the current volume
function printCurrentVolume()
local volume = hs.audiodevice.defaultOutputDevice():volume()
hs.alert.show("Current volume: " .. volume)
end

-- Bind the function to a hotkey, for example, Ctrl + Alt + V
hs.hotkey.bind({"ctrl", "alt"}, "V", printCurrentVolume)
```