🚀 Feature Request: need TypeScript definitions in getting-started

[L0st1]

What problem does the new feature need to solve?

The document lacks type definitions and detailed descriptions of parameters, which leads to a lack of understanding of the concept of alova

文档缺乏完善的指导，或者说完善的解释说明，循序渐进是好事，但我觉得现有的文档让我很难上手（我想说上手不是简单使用，我希望从axios切换到alova）

How should the new features you expect looks like?

It is important for beginners to include TypeScript type definitions and guide in each chapter.
Example method
explain the function of each parameter in sequence, the first parameter is used to describe the request type， the 2nd is an alovaInstance……
Thanks for reading

提供类型定义，并从类型逐步做出解释，对初学者会很友善。非常感谢

How important is it to you?

Can make it easier to develop