ObjFW  Ticket Change Details

Some more things that should be changed:

* Normalization should strip leading `.` or `..` from paths. RFC 3986 specifies that a path of `/../foo` should be normalized to `/foo`, see [section 5.4.1](https://www.rfc-editor.org/rfc/rfc3986#section-5.4.1).
* An empty authority should lead to an empty host and not a `n``l host, as a nil host would mean no authority.
* The `file:` scheme should treat no authority the same way as an empty authority as per [RFC 8089 section 2](https://datatracker.ietf.org/doc/html/rfc8089#section-2).
* Since `file:/some/path` is nicer to read to `file:///some/path`, it can be considered to switch using no authority instead of an empty authority when using `fileURIWithPath:`.
* Since the `objfw-embedded:` scheme is not really hierarchical, it should be changed to not use an authority and not start paths with `/`, so that it can be treated as opaque.