設置窗口默認最大化、全屏(electron)

一、默認最大化

win = new BrowserWindow({show: false})
win.maximize()
win.show()

二、默認全屏

win = new BrowserWindow({fullscreen: true})

參考：

1. https://electronjs.org/docs/api/browser-window#browserwindow-setfullscreen-flag
2. https://github.com/electron/electron/issues/7076
3. https://stackoverflow.com/questions/39062131/electron-set-fullscreen-onclick