relocate repo files so ND2 is the only code

lib/App/Netdisco/Web/Plugin/AdminTask/UndiscoveredNeighbors.pm

@@ -0,0 +1,48 @@
+package App::Netdisco::Web::Plugin::AdminTask::UndiscoveredNeighbors;
+
+use strict;
+use warnings;
+use Dancer ':syntax';
+use Dancer::Plugin::DBIC;
+use Dancer::Plugin::Auth::Extensible;
+use App::Netdisco::Util::Device qw/is_discoverable/;
+
+use App::Netdisco::Web::Plugin;
+
+register_admin_task(
+    {   tag          => 'undiscoveredneighbors',
+        label        => 'Undiscovered Neighbors',
+        provides_csv => 1,
+    }
+);
+
+get '/ajax/content/admin/undiscoveredneighbors' => require_role admin => sub {
+    my @results
+        = schema('netdisco')->resultset('Virtual::UndiscoveredNeighbors')
+        ->order_by('ip')->hri->all;
+    return unless scalar @results;
+
+    # Don't include devices excluded from discovery by config
+    # but only if the number of devices is small, as it triggers a
+    # SELECT per device to check.
+    if (scalar @results < 50) {
+        @results
+            = grep { is_discoverable( $_->{'remote_ip'}, $_->{'remote_type'} ) }
+            @results;
+    }
+    return unless scalar @results;
+
+    if ( request->is_ajax ) {
+        template 'ajax/admintask/undiscoveredneighbors.tt',
+            { results => \@results, },
+            { layout  => undef };
+    }
+    else {
+        header( 'Content-Type' => 'text/comma-separated-values' );
+        template 'ajax/admintask/undiscoveredneighbors_csv.tt',
+            { results => \@results, },
+            { layout  => undef };
+    }
+};
+
+1;