Include auto-generated client library
Description
Following from work to create and publish a client library for typescript for the API, this should be incorporated into the frontend.
Further details
Task list
- npm add the library from source at https://gitlab.developers.cam.ac.uk/uis/devops/iam/activate-account/api/-/packages/4253
- update frontend code to use this library instead of raw axios calls/clients.
Acceptance criteria
- Frontend uses client library
- Make sure tests pass