Add OTEL tracing support for Wiremock + automatic OTEL for Aspire integration (#1418)

* Update aspire to 13.1 (examples + code)

Allows usage of aspire CLI which is very useful for dev in codespaces (for my next PR).

* Add OTEL support

* Initial PR feedback

* PR feedback

* PR feedback

* PR feedback

* Cleanup.

* Cleanup

* Fix

* Fix

* Rename stuff around to be more accurate

* PR feedback

* Update WireMock.Net.OpenTelemetry.csproj

Update <Authors>

* PR feedback parser

* PR feedback package versions

* Status code feedback.

* Update preprocessor directives to to Activity Tracing instead of OpenTelemetry. Is more descriptive.

* Add tests

* Improve tests

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Co-authored-by: Stef Heyenrath <Stef.Heyenrath@gmail.com>

examples-Aspire/AspireApp1.AppHost/Program.cs

@@ -24,7 +24,8 @@ IResourceBuilder<WireMockServerResource> apiService2 = builder
     .AsHttp2Service()
     .WithMappingsPath(mappingsPath)
     .WithWatchStaticMappings()
-    .WithApiMappingBuilder(WeatherForecastApiMock.BuildAsync);
+    .WithApiMappingBuilder(WeatherForecastApiMock.BuildAsync)
+    .WithOpenTelemetry(); // Enable OpenTelemetry tracing for Aspire dashboard
 
 //var apiServiceUsedForDocs = builder
 //    .AddWireMock("apiservice1", WireMockServerArguments.DefaultPort)