camel-core - Dashboard endpoint for unified data for various runtimes

It would be good to have an unifed endpoint that report json data for a high level dashboard in camel-jbang that are the same for all runtimes (SB, Q, main). Today that depends on which runtime, and if you use micrometer, openetelemtry and so on.

We just need a set of standard high level metrics, that a quick dashboard for camel-jbang and other tools can use.