Improve logging by adding a stringified route and request_id to the Mojolicious::Controller->rendered method

[Us Us]

This makes it easy to track the beginning and end of request.

i.e.:

$app->log->debug(sub {
 my $timing = $self->helpers->timing;
 my $elapsed = $timing->elapsed('mojo.timer') // 0;
 my $rps = $timing->rps($elapsed) // '??';
 my $code = $res->code;
 my $msg = $res->message || $res->default_message($code);
 my $route = $self->match->endpoint->route->to_string;
 my $req_id = $self->req->request_id;
 return "\"$route\" ($req_id) $code $msg (${elapsed}s, $rps/s)";
}) unless $stash->{'mojo.static'};