save and load netmap positions for same device groups

lib/App/Netdisco/DB/Result/NetmapPositions.pm

@@ -0,0 +1,23 @@
+use utf8;
+package App::Netdisco::DB::Result::NetmapPositions;
+
+use strict;
+use warnings;
+
+use base 'DBIx::Class::Core';
+__PACKAGE__->table("netmap_positions");
+__PACKAGE__->add_columns(
+  "id",
+  { data_type => "integer", is_nullable => 0, is_auto_increment => 1 },
+  "device_groups",
+  { data_type => "text[]", is_nullable => 0 },
+  "positions",
+  { data_type => "text", is_nullable => 0 },
+);
+
+__PACKAGE__->set_primary_key("id");
+
+__PACKAGE__->add_unique_constraint(
+  "netmap_positions_device_groups_key" => ['device_groups']);
+
+1;