As of ~2 days ago, the ytdl-sub-gui image broke from using an older version of the `code-server` image. After this push, it should be fixed + working as intended
Adds a new docker image: `ytdl-sub-gui:latest` which is ytdl-sub packaged with VS-Code via LinuxServer.io's code-server image: https://hub.docker.com/r/linuxserver/code-server
Proper documentation will be added later