Add latent space visualisers

[WolfByttner]

No description provided.

[Saran-nns]

I guess, this is done here

[JustinShenk]

Thanks for pointing out the relevant code.

Please update the documentation to show intended behavior (preferably with an image since it is a visualizer), add type annotations for latent, and change method to snake case as per PEP8.

Regarding usage: the usage section is not clear, perhaps make it similar to other methods in trajectory.py:

    .. doctest::
    
    >> ... # doctest: +SKIP

This will allow autodocumentation with sphinx. Since we don't want the code to actually run during doctest, add +SKIP.

Also, shall we stick to Google Docstring format (Args, Returns)? Inconsistent docstrings are a code smell.

[Saran-nns]

Thanks for pointing this out. Recently I made the above-suggested changes as per issue #68 Also, there is a branch for linting and docstrings already. Will work on each module one by one.