Generate NWB files for first wave of VBN release

[danielsf]

It has been decided that the first release of VBN data will only include the "spiking data" NWB files. Once we have a functioning session object, we can use that to generate those files.

The ecephys sessions that need to be released are listed in ecephy_etl_pipelines issue 38

Tasks

• [ ] Run the VBN NWB writer module on the ecephys sessions slated for release
• [ ] Provide the scientists with a simple script telling them how to read these NWB files into BehaviorEcephysSession objects (be sure to specify which branch of the SDK they need to be working off of).

[danielsf]

We should create a directory in

/allen/programs/mindscope/workgroups/np-behavior

where we will store these NWB files.