Improve logging so that it would show why the stream is failing despite status 200 from proxy

[samip5]

As tittle, it seems often I get an 200 status from proxy but playback doesn't start despite it, and I have no way of knowing what's the issue.

It should return the upstream aka YouTube's reponses status code and message at least if it's having issues.

[samip5]

@FireMasterK I was looking into possibly logging the response body, but it seems I'm really out of my depth here with Rust as all of the ways I have tried results in it not compiling. :(

Pretty much all of the ways would consume the resp on line 347 in main.rs: let resp = CLIENT.execute(request).await;
Which of course makes everything else not really happy. Some guidance would be much appreciated.

This my StackOverflow question about this: https://stackoverflow.com/questions/78466365/rust-trying-to-include-response-body-to-my-response-with-reqwest-and-actix-web?noredirect=1#comment138333145_78466365