Support dynamic alias for the root collection

[ekraffmiller]

Currently the default value of collection alias in the Collection use cases is 'root'. This can cause a problem if the alias of the root collection is edited. To manage this the Dataverse API has a keyword, ':root', to get the root collection.

Need to analyze how to update the default collection alias being used in the Collection Use cases. For example, it makes sense to use ':root' as a default value for Get Collection, but what do we want to use as the default value for Create Collection?

See SPA issue: https://github.com/IQSS/dataverse-frontend/issues/489