feat: move deps to playbook

Remove galaxy dependencies from role meta and add explicit
include_role tasks in the playbook instead.

meta/main.yaml

@@ -5,6 +5,4 @@ galaxy_info:
   description: "install jellyfin"
   license: "MIT"
   role_name: "jellyfin"
-dependencies:
-  - role: "docker"
-  - role: "traefik"
+dependencies: []