fix: some small changes for glambie submission

[tsutterley]

docs: convert NASA Earthdata to notebook
feat: add new pixi task
docs: compile some of the documentary notebooks

[tsutterley]

@copilot review this pull request ignoring the pixi.lock file. Only review the changes and make suggestions. Do not add any new commits.

[Copilot]

@copilot review this pull request ignoring the pixi.lock file. Only review the changes and make suggestions. Do not add any new commits.

One substantive issue stood out:

• doc/source/conf.py:65-79 now enables notebook execution for RTD/local docs builds, but the newly added doc/source/getting_started/Install.ipynb and doc/source/user_guide/NASA-Earthdata.ipynb contain non-hermetic cells (! pixi task list and a live IS2view.utilities.cmr(...) network query). Because those notebooks have no stored outputs, myst-nb will try to execute them during make html, which can make docs builds fail when pixi is unavailable or external access/authentication is not available.

Suggested fix: keep those notebooks non-executed during Sphinx builds, or mark the environment/network-dependent cells to be skipped.