Add a plugin for the write-good tool, a linter for English prose.

[tdenewiler]

No description provided.

[tdenewiler]

I tested locally with

./statick/statick statick/ --output-directory /tmp/x --user-paths statick-md/,statick-md/src/statick_md --profile writegood-profile.yaml --config md-config.yaml --log info

That found 257 total unique issues using only the writegood tool plugin.

[codecov-commenter]

Codecov Report

Merging #41 (149ce8f) into main (467c292) will increase coverage by 0.03%.
The diff coverage is 96.07%.

@@            Coverage Diff             @@
##             main      #41      +/-   ##
==========================================
+ Coverage   95.86%   95.90%   +0.03%     
==========================================
  Files           6        7       +1     
  Lines         242      293      +51     
==========================================
+ Hits          232      281      +49     
- Misses         10       12       +2     

Impacted Files	Coverage Δ
...c/statick_md/plugins/tool/writegood_tool_plugin.py	96.07% <96.07%> (ø)

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