Add server-side subscription support
Add server-side subscription support with the following features:
- CreateSubscription: 1 subscription / session maximum
- ModifySubscription
- DeleteSubscriptions
- Create Monitored items:
- only data changed notifications are supported
- sampling rate is event-based (0 revised value enforced)
- filters are not supported (any write value is reported by default)
- notification queue size is not configurable nor limited
- Management of publish requests / responses (with a discard policy)
- Republish service (with a discard policy)
Edited by Vincent Monfort