@nestjs/axios: Expose AxiosError class

[yoshigev]

Is there an existing issue that is already proposing this?

• [x] I have searched the existing issues

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

The example here shows how to capture an error:

        catchError((error: AxiosError) => {

The problem is that AxiosError is not exported anywhere that is accessible.

Describe the solution you'd like

I think that AxiosError should be importable like:

import { AxiosError } from '@nestjs/axios';

Teachability, documentation, adoption, migration strategy

Currently, I think the only correct way of accessing it, is installing the axios package itself and import it from there.

What is the motivation / use case for changing the behavior?

Avoiding the need to install axios package.

[yoshigev]

Actually isAxiosError is a better alternative to use, but I would add both if possible.