message: add EventPassthrough
diff: export enum Probe {
  - Throttle = 1,
  + Default,
  + Throttle,
  Normal,
  Realtime
  }
  @@ -28,3 +29,9 @@ export enum MouseButton {
  Middle,
  Right
  }
  +
  +export enum EventPassthrough {
  + None = '',
  + Horizontal = 'horizontal',
  + Vertical = 'vertical'
  +}
  