URL PATH - [feature]

Hi, i have been experimenting with this package and it's really good. The only issue im having is that there is no default url option. For example in order to work the url should look like this: http://localhost:8080/proxy/https://www.youtube.com/watch?v=dQw4w9WgXcQ but if we specified something like default_url: "https://www.youtube.com/" then the proxy could handle the url like this: http://localhost:8080/proxy/watch?v=dQw4w9WgXcQ I'm not sure how hard this would be to implement, but this would be game changer for my project. Thank you for your attention!