【Feature】Add a scenario where the window is initially maximized (but not full screen)

[temeipu-offical]

I hope to add a parameter to WindowOptions so that the window can be maximized on initialization, because I need this for a reporting requirement. Thank you.

  const WindowOptions({
    this.size,
    this.center,
    this.minimumSize,
    this.maximumSize,
    this.alwaysOnTop,
    this.fullScreen,
    this.backgroundColor,
    this.skipTaskbar,
    this.title,
    this.titleBarStyle,
    this.windowButtonVisibility,
  });