feat: add Sablier v1.10.1 plugin for dynamic scaling

Added Sablier plugin and service for scale-to-zero capabilities:

**Traefik Plugin:**
- Added experimental.plugins.sablier configuration
- Plugin version: v1.10.1
- Module: github.com/acouvreur/sablier/plugins/traefik

**Sablier Service:**
- Created sablier/compose.yaml with Sablier server
- Uses Docker provider for container management
- Mounts Docker socket for container control
- Connected to falcon_network

**Configuration:**
- Added SABLIER_COMPOSE_PROJECT_NAME to arty.yml
- Added SABLIER_VERSION to arty.yml
- Included sablier stack in compose.yaml

**Usage:**
Services can now use Sablier middleware to automatically
scale to zero when idle and start on demand when accessed.

Example middleware configuration:
```yaml
http:
  middlewares:
    my-sablier:
      plugin:
        sablier:
          sablierUrl: http://sablier_app:10000
          names: service-name
          sessionDuration: 1m
```

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-Authored-By: Claude <noreply@anthropic.com>

arty.yml

@@ -91,6 +91,9 @@ envs:
     PROXY_COMPOSE_PROJECT_NAME: proxy
     PROXY_DOCKER_IMAGE: traefik:latest
     PROXY_TRAEFIK_HOST: proxy.pivoine.art
+    # Sablier
+    SABLIER_COMPOSE_PROJECT_NAME: sablier
+    SABLIER_VERSION: 1.10.1
     # Watchtower
     WATCHTOWER_POLL_INTERVAL: 300
     WATCHTOWER_LABEL_ENABLE: true

compose.yaml

@@ -9,6 +9,7 @@ include:
   - stash/compose.yaml
   - links/compose.yaml
   - umami/compose.yaml
+  - sablier/compose.yaml
   - proxy/compose.yaml
   - watch/compose.yaml
 

proxy/compose.yaml

@@ -11,6 +11,10 @@ services:
       # Ping endpoint for healthcheck
       - '--ping=true'
 
+      # Experimental plugins
+      - '--experimental.plugins.sablier.modulename=github.com/acouvreur/sablier/plugins/traefik'
+      - '--experimental.plugins.sablier.version=v1.10.1'
+
       # Logging
       - '--log.level=${PROXY_LOG_LEVEL:-INFO}'
       - '--accesslog=true'

sablier/compose.yaml

@@ -0,0 +1,21 @@
+services:
+  sablier:
+    image: acouvreur/sablier:${SABLIER_VERSION:-1.10.1}
+    container_name: ${SABLIER_COMPOSE_PROJECT_NAME}_app
+    restart: unless-stopped
+    command:
+      - start
+      - --provider.name=docker
+    volumes:
+      - /var/run/docker.sock:/var/run/docker.sock:ro
+    networks:
+      - compose_network
+    environment:
+      TZ: ${TIMEZONE:-Europe/Berlin}
+    labels:
+      - 'traefik.enable=false'
+
+networks:
+  compose_network:
+    name: ${NETWORK_NAME}
+    external: true