CLI plugin: sort logic items

Just a small patch which makes the list of logics dumped out by the `ll` or `lo` command ordered by thier string representation.

Having a large list of logics configured makes it hard to find the right one to force a reload or do a trigger in CLI. Now it's easy to find it and copy&paste it.

I was also thinking about to only list logics matching a given pattern. Could be implemented in a method called `sh.scheduler.match_logics()` - like the `match_items()` method.