Provide an option to auto forward tcp port for Android emulators

I usually use HotReload simultaneously on Android emulator and iOS simulator, the new auto discover feature is great and allows for a scenario where I can just set a random port to avoid collision when opening multiple emulators/apps.

Unfortunately, for Android emulators, I need to know the port so I can forward it through adb, as mentioned in the README.

My proposal: pass a -auto-forward flag so the Observer can automatically call adb to forward the port. I did this for my project and it is working, so if you think it makes sense, I can just open a new PR. The code looks something like this:

Inside the UdpReceived:

if (!_addresses.Contains(address))
{
    _addresses.Add(address);

    var port = address.Split(':')?[2];
    Process.Start("adb", $"forward tcp:{port} tcp:{port}");
}

[akamud]

I’ll open a PR with this improvement.

[AndreiMisiukevich]

i think this update makes sense 😃