Implement AsyncTaskTarget that formats NLog LogEvents into HTTP-requests using HttpClient. It should support batching, and send bulk of LogEvents.

Inherit from the new HttpClientTarget and implement new OpenTelemetryHttpTarget, that formats NLog LogEvents into the OpenTelemetry-Logging-Format.

It seems OpenTelemetry-organization are very reluctant to open their API for other Logging-Providers, so it is probably better to follow the footsteps of Serilog.