WIP: Links for Multipage websites

/!\ WARNING: This plugin needs work: I never finished to port it from Silex code base to an independent plugin. Here is the code in Silex and the unit test

This GrapesJS plugin manages links within a GrapesJS project. It allows users to set links to different types such as URL, Email, and Page. The plugin also updates links when a page link changes and marks links as issues if a page is removed.