SPARQL only notebook

[brianok-aws]

Is your feature request related to a problem? Please describe.
As a user who is only writing SPARQL queries, it is frustrating to have to create a new python3 notebook and use the %%sparql magic in every cell.

Describe the solution you'd like
I would like the option to create a New -> SPARQL notebook and have that notebook implicitly know every cell is a SPARQL query without me specifying the magic.

Describe alternatives you've considered
I am not sure of any alternatives other than typing %%sparql in every cell. It may be enough if the notebook automatically populates the last used cell magic at the top of every new cell.

Additional context

[joywa]

Consider a setting that allows you to keep the same context for %% gremlin, %%oc, or %%sparql