Plug&play mode for Hono adapters connectivity

[harism]

This is just an idea again and also something easy to implement oneself as an addition for predefined hardcoded Hono paths and topics the devices need to use.

The plug&play idea is very simple; instead of parsing MQTT topic on the adapter at all, forward all those topic and other details as part of the payload for the consumer reading actual payloads only currently. This way any MQTT traffic gets walkthrough on adapter level and the payload consumer becomes responsible for verifying and identifying incoming topics for example where needed. And MQTT adapter in this case would be used for authentication only. Also making it easier to claim a device is communicating successfully without looking at Hono adapter logs only.

I believe this similar idea should extend to HTTP based and other adapters too. To postpone all payload handling slightly later on the data pipeline one has.