[Feature] MQTT not have Brighter standard messaging gateway

[lillo42]

Describe the bug

The current implementation on MQTT doesn't have a custom ChannelFactory, MessageProducer and other

Further technical details

• Brighter version: 10.0.01

[iancooper]

@lillo42 Objective here is to produce two libraries, one supporting the current version of MQTT and using the low level library, but leave the old one

[PaulOberg1]

Hey @lillo42 I would be interested in solving this issue, would it be possible if I am assigned?

[iancooper]

Please note, we want to support both V4.3 and V5, in separate assemblies.

We also have related PRs:

• [Feature] For the MQTT provide Cloud Events JSON as an alternative to Brighter's propietary message format #3617
• [Feature] Use package version 4.3.X of MQTTnet instead of 5.X #3577
• [Fix] Rewrite the MQTT Client to use the LowLevelClient #3519

#3519 is significant as it allows us to fulfil this issue, by moving to a more standard model