Resolve "Feature: Send endpoint for relations"

Closes #37 (closed)

ragconnect.tests/src/test/01-input/relation/Test.jadd

@@ -22,6 +22,7 @@ aspect NameResolution {
   }
 
   // override resolving of SenderRoot for As in ReceiverRoot
+  // TODO change overriden attr to "globallyResolveSenderRootByToken" (should work for all relations in the end)
   refine RefResolverStubs eq A.resolveToMyAByToken(String id) = getParent() != null ? resolveToMyAByTokenInh(id) : null;
 
   inh SenderRoot A.resolveToMyAByTokenInh(String id);