Add script to run SingleR on NB samples

[sjspielman]

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Part of #1151

Describe the goals of the changes to the analysis module.

This issue tracks adding a script to run SingleR on a single library for SCPCP000004 using the NBAtlas trained reference to be prepared in #1166. This script should read in the SCE of interest and the reference, and export a TSV file with annotations.

What will your pull request contain?

An R script

Will you require additional software beyond what is already in the analysis module?

No

Will you require different computational resources beyond what the analysis module already uses?

No

If known, when do you expect to file the pull request?

No response