Internal enhancement for VersionedIdentifier

[baseTwo]

as a follow-up on

• Refactor - Rename NameAndVersion/LibraryKey to VersionedIdentifer #262

    Since your doing this shouldn't we take this opportunity to make this also remove the need for getting parts and building strings? This is off the top of my head so please forgive.
    VersionedIdentifier .ToFileName <-- which always has the dash naming convention that we agreed on.
    VersionedIdentifier .Name
    VersionedIdentifier .Version
    VersionedIdentifier .ToString() -- which results in the proper pipe format, but no pipe if version is null.
    VersionedIdentifier .ToUri or ToCanonical("https...") which results in the full uri
  
    _Originally posted by @richfirely in https://github.com/FirelyTeam/firely-cql-sdk/issues/546#issuecomment-2355507435_
  

• Replace the tuple with an internal ErrorOr result type

• Rather return the ErrorOr type than a string

• VersionedIdentifier should be safely castable to a string if possible

• The methods above will be extension methods