Event identifier of an integer type

[pellared]

What are you trying to achieve?

It may be good to allow having EventId of an integer type (instead of EventName which is always as string) for performance reasons.

Additional context.

In .NET the EventId is a integer with optional name. https://learn.microsoft.com/en-us/dotnet/api/microsoft.extensions.logging.eventid.-ctor?view=net-8.0

Also see OTel C++:

• https://github.com/open-telemetry/opentelemetry-cpp/blob/f69963f587b148d2eb20f7d30f8b4a1ccb184a6f/api/include/opentelemetry/logs/event_id.h

Related to:

• https://github.com/open-telemetry/opentelemetry-specification/issues/4260