Add first try at Plexon2RecordingInterface

[rly]

Fix #915

TODO:

• Restrict usage to Windows distributions

[rly]

I'm getting an error from neuroconv when getting the extractor -> spikeinterface/extractors/neoextractors/plexon2.py -> spikeinterface/extractors/neoextractors/neobaseextractor.py line 218 that "stream_id 3 is not in []". Investigating.

[rly]

This seems to have been resolved in neuroconv 0.6.2 catalystneuro/neuroconv#1058.

This could also be resolved by limiting neo version to <=0.13.3 but then spikeinterface needs to be downgraded which lowers the zarr version, which lowers the hdmf-zarr version, and so on. Might be better to bump to just support neuroconv 0.6.2 with the fix.

[rly]

Installing neuroconv 0.6.2 from pypi does not install its extras (see catalystneuro/neuroconv#1116). This is fixed in neuroconv 0.6.5. So I think it would be best to punt PL2 support to when neuroconv 0.6.5 support is added.