port/enhancement: Add Spaceduck Chroma syntax highlighting port

[bigpick]

Info

https://github.com/alecthomas/chroma/tree/master/styles

If you use Hugo to power a static site (which is common), you can take advantage of the syntax highlighter that ships with Hugo natively, Chroma.

For example, that is what I use on a given website, and it works nice and I find it better supported than using something else, and the list of supported built in languages/lexers is very large.

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It would be great to get a Spaceduck theme added to the list of supported styles, so that one would have the ability to leverage spaceduck syntax highlighting on Hugo blogs/websites natively.

For reference; some implemented ones (see full list at initial URL)

• Dracula
• Nord
• Solarized dark

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/assignTo me