Migrate Request class to @nextcloud/axios

[st3iny]

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

Requests are still performed using raw XHR requests. The code contains a lot of unnecessary boilerplate and complexity.

Describe the solution you'd like

Use our custom axios wrapper at @nextcloud/axios.

Describe alternatives you've considered

No response

Additional context

Ref https://github.com/nextcloud/cdav-library/blob/main/src/request.js Ref https://github.com/nextcloud/nextcloud-axios/pull/537

[hereje]

I would like to work on this issue.