Check for duplicate process/workflow calls in strict syntax

[bentsherman]

This PR adds the check for duplicate process/workflow calls to the strict syntax.

Currently the check is performed at runtime:

nextflow/modules/nextflow/src/main/groovy/nextflow/script/BindableDef.groovy

Lines 43 to 47 in 6f6a4cd

	if( this instanceof ProcessDef && !invocations.add(fqName) ) {
	log.debug "Bindable invocations=$invocations"
	final msg = "Process '$name' has been already used -- If you need to reuse the same component, include it with a different name or include it in a different workflow context"
	throw new DuplicateProcessInvocation(msg)
	}

With the strict syntax, we can now catch this error much earlier at compile-time.

However, it looks like the runtime check only applies to duplicate process calls. There is no equivalent check for duplicate workflow calls even though I believe there should be, since duplicate workflows would lead to processes with the same fully-qualified name. @pditommaso do you remember if this was intentional?

[netlify]

✅ Deploy Preview for nextflow-docs-staging canceled.

Name	Link
🔨 Latest commit	6f6a4cd
🔍 Latest deploy log	https://app.netlify.com/projects/nextflow-docs-staging/deploys/688e31b721414400087b875b