Create `get_clusterer()` function

[patcon]

Related diagram: #53 (comment)

The idea would be to create something that could be called like this:

# Call to get model with sensible defaults for our use-case
clusterer = get_clusterer("kmeans")
clusterer = get_clusterer("hdscan")

# Call to pass in override
custom_config = {}
clusterer = get_clusterer("hdscan", custom_config)

To Do

• kmeans
• HDBSCAN
• external high-pref HDBSCAN: https://github.com/scikit-learn-contrib/hdbscan
• evoc: https://github.com/TutteInstitute/evoc

[patcon]

This is almost done in https://github.com/polis-community/red-dwarf/tree/57-get-reducer

[patcon]

Partially done in #68

[patcon]

Merged, but not yet fully documented or tested (😬), but example of it working is here:

https://gist.github.com/patcon/93ee8377a7f359353ba946c0ce9da338