initial implementation of notebook PODs

Description This PR serves as the initial implementation of launching .ipynb files from the MDTF framework.

Changes:

'.ipynb': 'jupyter' was added to self._interpreters in pod_setup.py
logic was added to environment_manager.py to implement jupyter command-line execution.
required files for PODs added to example_notebook/

Please review this PR, and I can update accordingly.

Checklist:

[x] My branch is up-to-date with the NOAA-GFDL main branch, and all merge conflicts are resolved
[x] The scripts are written in Python 3.12 or above (preferred; required if funded by a CPO grant), NCL, or R
[ ] All of my scripts are in the diagnostics/[POD short name] subdirectory, and include a main_driver script, template html, and settings.jsonc file
[ ] I have made corresponding changes to the documentation in the POD's doc/ subdirectory
[ ] I have requested that the framework developers add packages required by my POD to the python3, NCL, or R environment yaml file if necessary, and my environment builds with conda_env_setup.sh
[ ] I have added any necessary data to input_data/obs_data/[pod short name] and/or input_data/model/[pod short name]
[ ] My code is portable; it uses MDTF environment variables, and does not contain hard-coded file or directory paths
[ ] I have provided the code to generate digested data files from raw data files
[ ] Each digested data file generated by the script contains numerical data (no figures), and is 3 GB or less in size
[ ] I have included copies of the figures generated by the POD in the pull request
[x] The repository contains no extra test scripts or data files

NOAA-GFDL / MDTF-diagnostics