Allow using Project Path to dataset.fork() method

[shaikh-ma]

The dataset.fork() method is probably one of the most useful methods for working with scrunch dataset.
It is often needed that the fork dataset should be moved to a specific project folder based on the scenarios.

The owner parameter of the fork() method allows creating a dataset fork in a defined project location, but this only works when the owner parameter is passed the Project URL e.g., https://.crunch.io/api/projects/<project_id>/.

This often requires the user, an additional step, to manually find out the project URL to pass as the owner parameter.

As compared to the project URLs, It is much easier to work with the project paths e.g., "Client datasets | Projects A | Project A - 1 ".
Also, the project paths are easy to remember and are more human friendly.

Please could you update the fork() method to allow the project path as well.