Add connection helpers + API key auth #15
Description
Weaviate.ConnectToLocal(restPort?, grpcPort?, apiKey?) -> Weaviate.Client
Weaviate.ConnectToCloud(URL, apiKey) -> Weaviate.Client
- NOTE: grpc = jumble some "/grpc" into the URL. See: https://github.com/weaviate/weaviate-python-client/blob/6ad379e6e4d7d5fadbcde2a25f257e6141dd5f07/weaviate/connect/helpers.py#L98