Add jupyterlab-statusbar extension

[andrespp]

https://github.com/jupyterlab/jupyterlab-statusbar

[andrespp]

Attempt to install:

RUN jupyter labextension install @jupyterlab/statusbar

Extension is not compatible with current version of jupyterlab:

jupyterlab-statusbar-0.4.3.tgz

Errored, use --debug for full output:
ValueError: This extension does not yet support the current version of JupyterLab.


Conflicting Dependencies:
JupyterLab              Extension        Package
>=0.19.1 <0.20.0        >=0.18.4 <0.19.0 @jupyterlab/application
>=0.19.1 <0.20.0        >=0.18.4 <0.19.0 @jupyterlab/apputils
>=0.19.1 <0.20.0        >=0.18.4 <0.19.0 @jupyterlab/console
>=0.19.1 <0.20.0        >=0.18.4 <0.19.0 @jupyterlab/docmanager
>=0.19.3 <0.20.0        >=0.18.6 <0.19.0 @jupyterlab/filebrowser
>=0.19.1 <0.20.0        >=0.18.4 <0.19.0 @jupyterlab/fileeditor
>=0.19.2 <0.20.0        >=0.18.4 <0.19.0 @jupyterlab/notebook
>=0.19.1 <0.20.0        >=0.18.4 <0.19.0 @jupyterlab/tooltip
The command '/bin/sh -c jupyter labextension install @jupyterlab/statusbar' returned a non-zero code: 1

[qrtt1]

It has been merged into jupyter
jupyterlab/jupyterlab#5352