feat, trackpad speed (#11680)

* feat, trackpad speed

Signed-off-by: fufesou <linlong1266@gmail.com>

* comments

Signed-off-by: fufesou <linlong1266@gmail.com>

* Trackpad speed, user default value

Signed-off-by: fufesou <linlong1266@gmail.com>

---------

Signed-off-by: fufesou <linlong1266@gmail.com>

src/lang/cn.rs

@@ -696,5 +696,7 @@ pub static ref T: std::collections::HashMap<&'static str, &'static str> =
         ("update-failed-check-msi-tip", "安装方式检测失败。请点击\"下载\"按钮，从发布网址下载，并手动升级。"),
         ("websocket_tip", "使用 WebSocket 时，仅支持中继连接。"),
         ("Use WebSocket", "使用 WebSocket"),
+        ("Trackpad speed", "触控板速度"),
+        ("Default trackpad speed", "默认触控板速度"),
     ].iter().cloned().collect();
 }