System.Diagnostics.Activity support

[luckyycode]

Since even Microsoft has started to integrate this ability to built-in classes (take a look on HttpClient) and with the growth of OpenTelemetry package, I'd like to make a proposal to integrate System.Diagnostics into CatraProto.

It does not require any thirdparty package and it's already integrated into net 5+ sdk. See https://docs.microsoft.com/en-us/dotnet/api/system.diagnostics.activitysource?view=net-6.0

Why?

It will be easier to find out any freezes or long executing methods using this thing. It will really help to diagnose any abnormal activity when using CatraProto. (For example, take a look on how it looks in Jaeger, Zipkin and sooo on, these are importers of telemetry and activities).

My proposal is made of a simple idea: insert ActivitySource into each publicly available CatraProto api method, with tags and requested data, that will make it easier to use for users and developers, unless needed.