[CX] Link REST API, CLI updates

As part of MB-40231, we are making some adjustments to our links REST api:

• The scope & link names will now be embedded into the URI as follows:
  /analytics/link/<scope name>/<link name>
  • the scope name is expressed in the canonical form, which uses / as a part separator
  • the scope & link names must be uri encoded
    • `remote-travel-sample`.inventory SQLPP form is represented by travel-sample/inventory in canonical form, or remote-travel-sample%2Finventory URL-encoded canonical form
    • e.g. /analytics/link/remote-travel-sample%2Finventory/remote-inventory-link
• For backwards-compatibility with 6.6, dataverse & name parameter combination is still supported
• Scope parameter will be removed after a short transition period
• The remote link proxy prefix will change from _p to ^p, to differentiate it from a scope
• The CLI will be updated to accommodate the changed API, as well as update the scope parameter to accept canonical form, instead of SQLPP form