Use URL Crate on Client Side

[gierens]

Problem

In the lib crate there is quite a lot of URL handled by Strings which may not be ideal. In particular you find a magnitude of the TODO use Url.join comments in various modules where I just used format! to concat.

Solution

I would be much cleaner, if the various client-side Api structs, e.g. UserApi, would have their url fields be of Url type, and then use Url.join to concatenate the base URL and the endpoint path together. The cli crate should probably also directly parse the -u/--url into a Url rather than a String.

[gierens]

@fredberto :)

[github-actions]

This issue is stale because it has been open for 30 days with no activity.

[kumarUjjawal]

@gierens can you assign this to me.