Add provision to create new components

React component involves a lot of boilerplate. So, it'll be great if the next release supports creation of new components as specified by the user.
Optionally the user may be asked whether he require functional or a class based component.
I would like to work on this :smile:

此 issue 沒有指出任何檔案、指令、測試或進入點。在決定元件產生的範圍，以及函式元件或類別元件的選擇之前，先盤點 CLI 現有的指令和 React 腳手架。完成應代表可以透過 CLI 使用指定選項建立所要求的元件，且專案的測試涵蓋了該行為。

由索引模型根據 Issue 內容生成。