EventSource has no reflection-free public entry point

[agocke]

Everything using EventSource must go through either WriteEvent or Write, both of which require reflection on either the input type, or the event definition method.

We should provide a way to bypass the reflection portions, both for AOT-compatibility and eliminating the reflection overhead.

[dotnet-policy-service]

Tagging subscribers to this area: @dotnet/area-system-reflection
See info in area-owners.md if you want to be subscribed.

[MihuBot]

I'm a bot. Here are possible related and/or duplicate issues (I may be wrong):

• Add EventSource guid ctors for non-reflection creation #28290
• Developers can employ EventSource APIs when publishing for AOT targets to be able to use .NET tracing capabilities #43390

[dotnet-policy-service]

Tagging subscribers to this area: @steveisok, @dotnet/area-system-diagnostics-tracing
See info in area-owners.md if you want to be subscribed.