Restructure repo: group Docker stacks under docker-compose/, add ansible/ playbooks and roles

docker-compose/smartctl/docker-compose.yml

@@ -0,0 +1,11 @@
+services:
+  smartctl_exporter:
+    image: ghcr.io/prometheus-community/smartctl_exporter:latest
+    container_name: smartctl_exporter
+    privileged: true
+    volumes:
+      - /dev:/dev
+      - /run/udev:/run/udev:ro
+    ports:
+      - "9633:9633"
+    restart: unless-stopped