test: composing scss class (reproduction of error described in #220)

[GeorgeTaveras1231]

Reproduces the syntax error described in #220 . Tests will not pass until that PR is merged.

The changes just include the addition of a composes: directive in a sass file to a file that uses syntax only parseable by SASS

To see the results I ran npm test -- __tests__/cli.test.ts

Expected: test to pass
Actual: Produces the following error

Command failed: npm run typed-scss-modules "examples/basic/**/*.scss" -- --includePaths examples/basic/core --aliases.~alias variables --banner '// example banner'
    /<rootPath>/typed-scss-modules/node_modules/postcss/lib/input.js:106
          result = new CssSyntaxError(
                   ^
    CssSyntaxError: /<rootPath>/typed-scss-modules/examples/basic/feature-a/another-style.scss:3:19: Unknown word
    You tried to parse SCSS with the standard CSS parser; try again with the postcss-scss parser