[Feat] Add Dead-Letter Queue (DLQ) for Failures

[yordis]

Related to #138

Along with acking the message to avoid queueing the system on a failure, it is also prudent that we must publish successfully into a DLQ topic the failed message.

Acceptence Criteria

As an operator:

• I would allow to configure a DLQ topic name where the failed messages will be published to

As an application dev:

• I expect a DLQ message to be published when a message is processed.

[adamdecaf]

This seems like a handy feature. Would you like to work on it?

[adamdecaf]

I'm assuming failures encountered by #136 would appear on this DLQ, right?

[yordis]

Yes, everything that could be "missed" in the processing would be a DLQ for late consumption of the message.

Being said,

You could also split the DLQ into broken message structures and have a failures topic for those things.

I instead do the latter architecturally.

[yordis]

This seems like a handy feature. Would you like to work on it?

I will as soon as I have some time, this will be critical to us