feat: initial support for prettier-stylelint (#218)

* feat: initial support for prettier-stylelint

* chore: cleanup logs

* fix: update safeExecution to support Promise and refactor to use it

* fix: remove exports

* fix: update prettier-stylelint

* fix: remove console.log and bump version

* fix: this add support to relative package import and default prettier options

* fix: add stylelintIntegration to README

Author: hugomrdias

README.md

@@ -76,6 +76,10 @@ If true, indent lines with tabs
 Use *[prettier-eslint](https://github.com/prettier/prettier-eslint)* instead of *prettier*.
 Other settings will only be fallbacks in case they could not be inferred from eslint rules.
 
+#### prettier.stylelintIntegration (default: false) - CSS, SCSS and LESS only 
+Use *[prettier-stylelint](https://github.com/hugomrdias/prettier-stylelint)* instead of *prettier*.
+Other settings will only be fallbacks in case they could not be inferred from eslint rules.
+
 #### prettier.javascriptEnable (default: ["javascript", "javascriptreact"])
 Advanced feature. Use this to opt in / out prettier on various language ids. Restart required.
 Use parser `babylon` or `flow` depending on `prettier.parser` for given language ids.