feat(uri): add setter for path

[tony-go]

Part of #811

[jviotti]

Not sure if here or in another PR, but as you implement setters or any new functionality in URI, it might be worth searching uses of URI in other modules, like jsonschema and see if they can be refactored to use the new functionality. I remember leaving lots of TODOs for improvements on URIs that we planned (though not sure if for path setters though)

[tony-go]

Not sure if here or in another PR, but as you implement setters or any new functionality in URI, it might be worth searching uses of URI in other modules, like jsonschema and see if they can be refactored to use the new functionality. I remember leaving lots of TODOs for improvements on URIs that we planned (though not sure if for path setters though)

Yeah let me try :)

What I found so far is: https://github.com/sourcemeta/jsontoolkit/blob/main/src/jsonschema/reference.cc#L381