named alarms feature

[romange]

Similarly to PUBLISH channel message,

introduce asynchornous ALARM name id seconds that will trigger the message into channel name after seconds. if someone will call ALARM name id seconds again, it will override and update the time when id should fire. A consumer client may register to the channel with the alarm name and receive the alarm fire events there. The alarm will be a one-shot event.

[romange]

Came from a discussion in discord where originally the user wanted to use "SETEX" call with event notifications. The consumer may register to the channel with the alarm name and receive the alarm fire events there. The alarm will be a one-shot event.