feat: add ipywidgets package. (#233)

Author: ioga

dockerfile_scripts/notebook-requirements.txt

@@ -2,4 +2,5 @@
 # For now, let's avoid needing to install Rust. When the time comes, see here: https://stackoverflow.com/questions/49676490/when-installing-rust-toolchain-in-docker-bash-source-command-doesnt-work
 jupyterlab~=3.5.0
 jupyter-archive~=3.2
-jupyterlab-server~=2.10,<=2.16.5
+jupyterlab-server~=2.10,<=2.16.5
+ipywidgets