feat: added lightningcss support

[alexander-akait]

This PR contains a:

• bugfix
• new feature
• code refactor
• test update
• typo fix
• metadata update

Motivation / Use-Case

fixes #191

Breaking Changes

No

Additional Info

@devongovett friendly ping, will be great to update docs (https://github.com/parcel-bundler/lightningcss#with-webpack), because the link was changed

[codecov]

Codecov Report

Base: 95.88% // Head: 95.89% // Increases project coverage by +0.01% 🎉

Coverage data is based on head (e0099e6) compared to base (a6b5ee6).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #192      +/-   ##
==========================================
+ Coverage   95.88%   95.89%   +0.01%     
==========================================
  Files           3        3              
  Lines         267      268       +1     
  Branches      107      107              
==========================================
+ Hits          256      257       +1     
  Misses         11       11              

Impacted Files	Coverage Δ
src/utils.js	91.66% <ø> (ø)
src/index.js	98.11% <100.00%> (+<0.01%)	⬆️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.