Select best package for H5AD processing.

[ogibson]

This ticket is blocked by https://github.com/hms-dbmi-cellenics/issues/issues/45

Background

Once we are certain of the specification we want to implement, we need to select the best library for the process. For this, it's essential to test converting the selected format with different packages and make a decision.

Planning documents

https://docs.google.com/document/d/1r1AWYk_zvhsWuNYfg0lf5jkHKh49uAnrtmeVZ7uff5M/edit

Goal

• [ ] Select the best library for converting H5AD files from the specification chosen in issue https://github.com/hms-dbmi-cellenics/issues/issues/45 to Seurat, keeping all slots, embeddings and annotations.