Suggestion: move function id from event to metadata

The current implementation creates a new telemetry event for each profiled function. So if I want to pass gathered data further to telemetry.metrics (and view them as graphs in prometheus or something like it) I had to create a new metric for each profiled function.
I think it will be easier to use if all profiled functions will be gathered as a single event with function id included in the metadata.
This way I have to add only one distribution to telemetry.metrics to be able to view all profiled functions.
For example, if I will try to profile some function in the production environment currently I have to add detf to profiled function and new distribution to project Telemetry module. Thus I had to change and reload two modules instead of one.
If function id will be stored in event metadata, I won't have to change telemetry module to see the new profile graph.

I've implemented suggested changes in the forked branch: https://github.com/ludddd/telemetria for my own use.
If you find this idea useful I'll be glad to discuss how to integrate them back (maybe making them optional by flag?).