On insert -> send http request to discord webhook

declare
  username text;
begin
  SELECT public.users.username INTO username FROM public.users WHERE id = user_uuid;
  perform net.http_post(
        url:='https://discord.com/api/webhooks/.../...',
        headers:='{"Content-Type": "application/json"}'::jsonb,
        body:=json_build_object('content', '**' || username || '**: ' || feedback)::jsonb
    );
  return;
end;