Feature/bulk item creation example (PR #261)

[markdoerr]

This is the corresponding bulk creation example to socotecio/django-socio-grpc#261

(s. jupyter/example_bib_explorer.ipynb )

[markdoerr]

@legau and @AMontagu,

interestingly the bulk creation is not much faster (in the range of 1-2 seconds / 1000 Authors).

Does that mean that the main bottleneck is not the serialisation from a dictionary -> protobuf message on the client side, but the gRPC / DRF deserialisation on the server side ?

[AMontagu]

@markdoerr Yes that what it mean.

We will try to work on that but not in the close futur. As we do not accept the AsyncBulkCreateMixins in DSG core. What you plan on this PR ?
Do you wan to change it and merge it or closing it ?

[markdoerr]

Thanks for the reminder @AMontagu ,
if you do not mind, I would make the example nice and if you agree, we could merge it into master.
(I was just waiting to give you some time to analyse the performance issue :)

[AMontagu]

Okay for me to merge it once everything good