[Beta] Better imports for icon components

Creating an index.ts file in components/Icon that would just import all the icon components and export them.

// components/Icon/index.ts
import {IconCopy} from './IconCopy';

export {IconCopy};

Why do this?

The old import

import {IconCopy} from '../Icon/IconCopy';

would then be replaced with

import {IconCopy} from '../Icon';

thus creating a better readable code.

從 components/Icon 和提議的入口點 components/Icon/index.ts 開始，以 IconCopy 作為匯出範例。找出現有的 ../Icon/IconCopy 匯入，將其替換為 ../Icon，並確認 index 匯出了所有圖示元件。