Support custom extensions in .editorconfig

[belav]

#1251 is adding the ability to customize options based on file path, which will also allow non-standard file extensions to be formatted.

This issue is for adding support for this to .editorconfig

[viceice]

Would this also enable setting preprocessorSymbolSets via .editorconfig? That option force me to use .csharpierrc for configuration.

[belav]

Would this also enable setting preprocessorSymbolSets via .editorconfig? That option force me to use .csharpierrc for configuration.

@viceice preprocessorSymbolSets hasn't been supported as an option for a few versions now. CSharpier can parse the conditions in the preprocessor directives and build its own sets for each file.

[viceice]

Would this also enable setting preprocessorSymbolSets via .editorconfig? That option force me to use .csharpierrc for configuration.

@viceice preprocessorSymbolSets hasn't been supported as an option for a few versions now. CSharpier can parse the conditions in the preprocessor directives and build its own sets for each file.

oh, I missed that change 😅. so I'll drop the explicit config in favor of editor config. 🤗