configure publish only if key_changed

[DaeMonSxy]

Hi all,

I come across issue, that some devicess are kind of flooding network.
Have a home-center based on esp32, so this seems down sometimes, if 20-30messages popping up in a second,
debounc might help for some cases....

I am thinking that would it be possible somehow to add an attribute just to publish if certain attribute (key) would change ?
something like key_changed: ["temperature"] ( in analogy to filtered_attributes: ["working_day","sensor"] )

so the publish would happen only if temperature attrubute would change, otherwise no publish.