Queue monitoring.

[ASKozienko]

This could be used to send stats to Grafana or a real time tool.

Here's an example of grafana dashboard.

[makasim]

add a method to track send messages stats.

[makasim]

@ASKozienko some additions

• ConsumeMessageStats should have a redelivered field
• SentMessageStats should have messageId field (could be null)
• SentMessageStats should have correlationId field (could be null)
• Could you add Client extension to track sent messages.

[makasim]

MessageStats obj should allow setting exception details too.

[makasim]

• Splint Client Extension Interface, (look at Consumption Extension for reference).
• Add StorageFactory (and interface) that accept string dsn and return monitoring storage, (for now you could hard code influxdb and wamp in the factory).