The given graph but with all object types found among the given schemas added as nodes if they compiled, or as errors describing why they were not added as nodes.
Array of Effect/Schema. Only the object types, structs or classes, will
be added to the graph. Non-object types will be returned as errors.
Just like addSchemas, except all errors will be added as error nodes to the graph so that it will always be modified: either because nodes were successfully added or because error nodes were added.