Issue 141 -- fix 'no agent available' user view

[tskluzac]

When a local agent is unavailable to relay messages from the client to Zambeze, the user experience should be 'informative and helpful'. This branch is a first attempt at improving that user workflow.

Closes #141

[wigging]

The dispatch, status, and result methods on the Campaign class need docstrings. Other than that this looks fine.

[tskluzac]

Added docstring to dispatch. Removed status and result as those are improperly implemented and partially moved to other classes. Cleaning up as we go :)

[tskluzac]

@wigging please take a look when you get the chance (I forgot to tag you on Friday)

[wigging]

It looks like you used the Google style for the docstrings. I thought we decided to use the NumPy style? I also suggested the NumPy style in the CONTRIBUTING.md document. So which style should we use?

[wigging]

You also need to rebase this branch so it's up-to-date with the main branch.

[tskluzac]

@wigging I believe this is proper numpy style now (per their docs that you linked in the contributing doc). That's what I get for asking AI for helping in the docstring conversions...

[wigging]

Indentation is screwed up.

"""Initializes a Campaign instance.

Parameters
----------
    name : str
        The name of the campaign.
    activities : str, optional
        List of science activities for processing by Zambeze.
    logger : logging.Logger, optional
        Logger object to flush stderr and stdout
    force_login : bool
        Boolean whether to force a Globus Auth flow.
"""

Should be like this:

"""Initializes a Campaign instance.

Parameters
----------
name : str
    The name of the campaign.
activities : str, optional
    List of science activities for processing by Zambeze.
logger : logging.Logger, optional
    Logger object to flush stderr and stdout
force_login : bool
    Boolean whether to force a Globus Auth flow.
"""

Same for the other docstrings. Also, Notes: should be underlined and remove the : at the end.

All of this can be checked by the linter. But if we enable it in GitHub Actions then most of the Python files would fail because the docstrings are a mess in this project.