conda recipe

[stuarteberg]

Needs a conda recipe. Biggest dependency is neuclease.

It turns out apptainer is available on conda-forge, so we could consider explicitly listing apptainer as a conda dependency instead of requiring the user to have obtained it via the OS package manager. Probably not a high priority for us, though. We plan to use the Janelia cluster, which already has apptainer. But it might be feasible to run snapshot generation directly on emdata5 or emdata6, in case that's desirable for some reason.

Other dependencies: pandas, numpy, jinja2, pyarrow, confiddler, holoviews, hvplot, bokeh