Add documentation for .editorconfig properties

[FantasyTeddy]

I added some documentation for the .editorconfig properties introduced with #3285.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 97.43%. Comparing base (cedfcf9) to head (140f2b6).

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #3374      +/-   ##
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+ Coverage   94.34%   97.43%   +3.08%     
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  Files         920      920              
  Lines      109565   109592      +27     
  Branches     3306     3306              
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+ Hits       103373   106780    +3407     
+ Misses       5172     1838    -3334     
+ Partials     1020      974      -46     

[JobaDiniz]

Basically, all the json settings are supported in editorconfig file, right? You just need to "flat" the json path to create the key to be used in the editor config, is that right?

[FantasyTeddy]

I think that's a good general summary, yes.
However, there are a few exceptions which cannot be set in the .editorconfig or use a different property name (e.g. from the .NET/C# formatting rules)