relocate repo files so ND2 is the only code

lib/App/Netdisco/Web/Plugin/Inventory.pm

@@ -0,0 +1,27 @@
+package App::Netdisco::Web::Plugin::Inventory;
+
+use Dancer ':syntax';
+use Dancer::Plugin::DBIC;
+use Dancer::Plugin::Auth::Extensible;
+
+use App::Netdisco::Web::Plugin;
+
+register_navbar_item({
+  tag   => 'inventory',
+  path  => '/inventory',
+  label => 'Inventory',
+});
+
+get '/inventory' => require_login sub {
+    my $models = schema('netdisco')->resultset('Device')->get_models();
+    my $releases = schema('netdisco')->resultset('Device')->get_releases();
+
+    var(nav => 'inventory');
+
+    template 'inventory', {
+      models => $models,
+      releases => $releases,
+    };
+};
+
+true;