relocate repo files so ND2 is the only code

lib/App/Netdisco/DB/ResultSet/DevicePortSsid.pm

@@ -0,0 +1,48 @@
+package App::Netdisco::DB::ResultSet::DevicePortSsid;
+use base 'App::Netdisco::DB::ResultSet';
+
+use strict;
+use warnings;
+
+__PACKAGE__->load_components(
+    qw/
+        +App::Netdisco::DB::ExplicitLocking
+        /
+);
+
+=head1 ADDITIONAL METHODS
+
+=head2 get_ssids
+
+Returns a sorted list of SSIDs with the following columns only:
+
+=over 4
+
+=item ssid
+
+=item broadcast
+
+=item count
+
+=back
+
+Where C<count> is the number of instances of the SSID in the Netdisco
+database.
+
+=cut
+
+sub get_ssids {
+    my $rs = shift;
+
+    return $rs->search(
+        {},
+        {   select => [ 'ssid', 'broadcast', { count => 'ssid' } ],
+            as       => [qw/ ssid broadcast count /],
+            group_by => [qw/ ssid broadcast /],
+            order_by => { -desc => [qw/count/] },
+        }
+        )
+
+}
+
+1;