[Feature request]: Support Device Based Discovery (Home Assistant)

[corporategoth]

Is your feature request related to a problem? Please describe

Home Assistant has FINALLY released Device Based Discovery in 2024.11

This should be able to cut down the massive number of messages being published for device discovery (in my case from 14,000 down to 180).

Describe the solution you'd like

Support device-based discovery https://www.home-assistant.io/integrations/mqtt/#device-discovery-payload

Describe alternatives you've considered

This issue has a long history: #20648

Additional context

N/A

[corporategoth]

@Koenkk It's finally here and an option :)

[corporategoth]

@Koenkk is this planned for 2.0.0 (it seems like a major rev feature)?

[Koenkk]

@corporategoth not planned for 2.0.0 (since it is not breaking)

[corporategoth]

@Koenkk does everything in 2.0.0 have to be breaking? ;)

[Koenkk]

@corporategoth for sure not but didnt have the time to work on this yet. Would be great if someone else could take a look at this.