Add wheel install

[dchassin]

This PR fixes on item missed on issue #1250, i.e., the wheel was not installed in the shared folder so it was not possible to install the gridlabd module in any other venv created by the user after gridlabd was installed. Now you can do the following anytime:

python3.10 -m venv example
. example/bin/activate
python3 -m pip install /usr/local/opt/gridlabd/current/gridlabd/share/*.whl
python3 -c 'import gridlabd; print(gridlabd.version())'

which should generation output like

{'major': 4, 'minor': 3, 'patch': 3, 'build': 230708, 'branch': 'develop_add_wheel_install'}

This PR also fixes a problem with output from the Python documentation example.