Tunnel support for plain dotnet core console app

### Problem Statement

I am looking for tunnel support compatible with the `Sentry` nuget package, so I can tell my `netcoreapp3.1` to use a tunnel on the local network to send Sentry logging. This is required as the machine where the console app is running on, doesn't have access to the internet, only to the machine where the tunnel is running on.

### Solution Brainstorm

Implement https://docs.sentry.io/platforms/javascript/troubleshooting/#using-the-tunnel-option for the dotnet core SDK :)