fix: restore files unintentionally reverted by sync commit

- restore jgpc/ layout (undo accidental revert to thinkstation/), homelab-overview.md
  (June 13 version), docs/jarvis doc, owncloud scripts, siklos/beszel compose
- re-remove jellyfin/node-exporter and siklos/monitoring (replaced by Beszel)
- jgpc/frigate/docker-compose.yml: update to newer local version (cpuset pinning, 8G limit)
- root frigate-* files are local working copies -> gitignored

jellyfin/node-exporter/docker-compose.yml

@@ -1,15 +0,0 @@
-services:
-  node-exporter:
-    image: prom/node-exporter:latest
-    container_name: node-exporter
-    restart: unless-stopped
-    network_mode: host
-    pid: host
-    volumes:
-      - /proc:/host/proc:ro
-      - /sys:/host/sys:ro
-      - /:/rootfs:ro
-    command:
-      - '--path.procfs=/host/proc'
-      - '--path.sysfs=/host/sys'
-      - '--collector.filesystem.mount-points-exclude=^/(sys|proc|dev|host|etc)($$|/)'