feat: Add Duplicate Package Checker Webpack Plugin (#88)

Warns you when multiple versions of the same package exist in your bundle

https://github.com/darrenscerri/duplicate-package-checker-webpack-plugin

Author: darrenscerri

README.md

@@ -189,6 +189,7 @@ Inspired by the [awesome](https://github.com/sindresorhus/awesome) list. Feel fr
 - [Generate package.json Plugin](https://github.com/lostpebble/generate-package-json-webpack-plugin) - Limit dependencies in a deployment `package.json` to only those that are actually being used by your bundle. -- *Maintainer*: `Paul Myburgh` [![Github][githubicon]](https://github.com/lostpebble)
 - [Progressive Web App Manifest](https://github.com/arthurbergmz/webpack-pwa-manifest) - PWA manifest manager and generator. -- *Maintainer*: `Arthur A. Bergamaschi` [![Github][githubicon]](https://github.com/arthurbergmz)
 - [FileManager Webpack Plugin](https://github.com/gregnb/filemanager-webpack-plugin) - Copy, move, delete files and directories before and after Webpack builds -- *Maintainer*: `Gregory Nowakowski` [![Github][githubicon]](https://github.com/gregnb)
+- [Duplicate Package Checker Webpack Plugin](https://github.com/darrenscerri/duplicate-package-checker-webpack-plugin) - Warns you when multiple versions of the same package exist in your bundle -- *Maintainer*: `Darren Scerri` [![Github][githubicon]](https://github.com/darrenscerri)