Terminology server: no support for tx-resource

[qligier]

We currently don't handle the 'tx-resource' parameters in our terminology server. It can be used to send needed resource to expand a value set (like a code system or another value set).

Not sure if it would be useful, though.

if (request.hasParameter("tx-resource")) {
	// The client may have sent us other resources to use in the expansion (e.g. another ValueSet)
	for (final var component : request.getParameters("tx-resource")) {
		if (component.getResource() instanceof final ValueSet valueSetResource) {
			final IValidationSupport.ValueSetExpansionOutcome result = this.inMemoryTerminologySupport.expandValueSet(
				validationSupportContext,
				this.expansionOptions,
				valueSetResource);
			if (result == null || result.getValueSet() == null) {
				return createErrorResponseParameters(
					"Failed to expand the provided 'tx-resource' ValueSet '%s'".formatted(valueSetResource.getUrl()),
					coding,
					codeableConcept
				);
			}
			// Store the expanded value set in the cache
			this.cacheExpandedValueSet(cacheId, valueSetResource.getUrl(), (ValueSet) result.getValueSet());
		}
	}
}