Handle HEAD request on /stream

[simojenki]

"HEAD /stream/track/...... HTTP/1.1" 401 - "-" "Linux UPnP/1.0 Sonos/85.0-65270 (ZPS19)"

[Sigmabrogz]

I'd like to work on this issue. Here's my approach:

The issue shows that HEAD requests to /stream endpoints are returning 401 errors. I'll investigate the streaming route handlers to ensure they properly handle both GET and HEAD requests. HEAD requests should return the same headers as GET but without the body, which is standard HTTP behavior for streaming endpoints.

Let me know if this sounds good or if you have any specific requirements!