Is your feature request related to a problem? Please describe.

When using axios, currently the types offered do not have any descriptions as to what they are and what they do.

Describe the solution you'd like

By adding decriptions via JSDocs, it would make axios much nicer to use.

Example:

/**
 * MyType is a contrived type for example purposes.
 */
export type MyType: string;

Describe alternatives you've considered

No response

Additional context/Screenshots

The website already provides some descriptions for some of the properties. I'm happy to make a PR adding those as a starting point.