Create documentation for the installation and use of the package v2

Overview of the feature request

This documentation should contain topics such as the installation of the package through NPM, the initialization via ApiConfig, and instructions for importing and executing its use cases.

What inspired the request?

• Latest changes on the package and upcoming release

What existing behavior do you want changed?

None

Any brand new behavior do you want to add to js-dataverse?

None

Any open or closed issues related to this feature request?

None

首先检查 package 的 NPM 安装流程和 ApiConfig 初始化，然后跟踪文档中记录的导入和用例执行路径。当文档涵盖 package v2 的安装、初始化、导入和用例执行时，工作即告完成。