Support Sass's index files

[chalkygames123]

Hi, thank you for creating the plugin.

Sass's @use, @forward and @import rules have a feature called "Index Files" that when we load a directory itself, its _index.scss or _index.sass used instead.

Could you support that feature?

[tedw]

@chalkygames123 FYI I was able to get it to work by adding index to the path, e.g. @forward "vars/index";

[chalkygames123]

@tedw Thanks! I have addressed the issue by applying the patch with patch-package, as you can see in the commit linked above.

[sashamorozov]

@chalkygames123 your solution works, thanks a lot!