[FEA] Add Jupyterlab extension to display GPU usage

[miguelusque]

Is your feature request related to a problem? Please describe.
I'd like to add the following Jupyterlab extension to gQuant container:

A JupyterLab extension for displaying dashboards of GPU usage

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[miguelusque]

RAPIDS 0.9 container will have it installed.

I have opened a new issue, #54, and close this one.