No vector index creation inside unstructured2graph

[Josipmrden]

There needs to be also vector index creation inside unstructured2graph, as we want to remove any boilerplate from the clients code.

[antejavor]

It is defined here: https://github.com/memgraph/ai-toolkit/blob/main/unstructured2graph/src/unstructured2graph/memgraph.py#L83, maybe I am missunderstanding someting 🤔