Add baseUrl and paths in tsconfig.json and jsconfig.json

Created by: xiaoxiangmoe

tsconfig.json or jsconfig.json:

{
  "compilerOptions": {
    "baseUrl": ".",
    "paths": {
      "@/*":["src/*"]
    }
  }
}

see https://github.com/facebook/create-react-app/issues/5118

This will help VSCode and other IDE to resolve path in TypeScript & JavaScript.