Showcase the "next" tag in the plugin details page

[VladimirAmiorkov]

It would be great to have a visual representation in the details page that would give the user indication that this plugin supports a "next" version that is sued in many of the core plugins (nativescript-angular, tns-core-modules and NativeScript itself). This would both provide a way for an advanced user that wants to use the latest and greatest to have a simpler way of finding plugins that support such "next functionality" and give us the team a bigger audience that could bring issue and bug reports faster to us during the "next/beta" period of the plugin before it going to the official latest version.