Merge local identifiers for workflow language

[stain]

Many RO-Crates in WorkflowHub use identifiers like #cwl for identifying a workflow language rather than the now global identifiers https://w3id.org/workflowhub/workflow-ro-crate#cwl -- see https://about.workflowhub.eu/Workflow-RO-Crate/#supported-workflow-types

This is because earlier versions of the Workflow RO-Crate profile did not suggest global identifiers for these. However these can still be spotted by having the same identifier and/or url.

So the current graph will make it complicated to query for workflows in a given language as the absolute identifiers (from #1) will vary for each crate.

As it may be tricky to replace each use of programmingLanguage and the declared entity perhaps it's better to add glue statements:

<arcp://uuid,1e4756b7-abfa-5dc5-849c-053d538ea341/#galaxy>  
  owl:sameAs <https://w3id.org/workflowhub/workflow-ro-crate#galaxy> ;
  s:sameAs <https://w3id.org/workflowhub/workflow-ro-crate#galaxy> .

Here sameAs is stated both with OWL and http://schema.org/sameAs as we're not using OWL otherwise but owl:sameAs is very much more common than s:sameAs.

This would need to match each of the languages in https://about.workflowhub.eu/Workflow-RO-Crate/ro-crate-metadata.json but not other unknown languages.