EDA - Notebook style interface

[dmfalke]

The DESeq frontend sprint recently agreed on using a notebook-style interface for the wdk search. I propose we develop this as a new eda "app", similar to the workspace and mapveu apps.

Since we want to use a fixed set of cells for DESeq, part of the API for this webapp should be to declare a fixed set of cells, in addition to indicating if custom cells can be added, and possibly which apps and vizs can be included.

screenshot of proposed interface

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Related, since genomics sites are going to have a variety of data types in eda (rnaseq, wgcna, etc), we will likely need a way to declare which data types an app can be used for. This is general eda thing, which I will raise for discussion in the appropriate venue.