feat: add Jellyfin service deployment and configuration

config/ansible/tasks/servers/services/jellyfin/docker-compose.yml.j2

@@ -0,0 +1,30 @@
+services:
+  jellyfin:
+    image: lscr.io/linuxserver/jellyfin:latest
+    container_name: jellyfin
+    environment:
+      - PUID=1000
+      - PGID=100
+      - TZ=Europe/Amsterdam
+      - JELLYFIN_PublishedServerUrl=https://jellyfin.vleeuwen.me
+    volumes:
+      - {{jellyfin_data_dir}}/jellyfin-config:/config
+      - /mnt/object_storage/movies:/movies
+      - /mnt/object_storage/tvshows:/tvshows
+      - /mnt/object_storage/music:/music
+    ports:
+      - 8096:8096
+      - 8920:8920
+      - 7359:7359/udp
+      - 1901:1900/udp
+    restart: unless-stopped
+    group_add:
+      - "992"
+      - "44"
+    networks:
+      - caddy_network
+
+networks:
+  caddy_network:
+    external: true
+    name: caddy_default