feat: publish standalone worker

Separate worker packaging and service lifecycle from the control plane.

packaging/systemd/worker.env.example

@@ -0,0 +1,16 @@
+RSMON_URL=https://rsmon.ru
+RSMON_TOKEN=replace-with-worker-token
+WORKER_HOST=127.0.0.1
+WORKER_PORT=27401
+WORKER_URL=
+WORKER_LOGIN=admin
+WORKER_PASSWORD=replace-with-a-long-random-password
+RSMON_WEBAPP_DATA_DIR=/var/lib/rsmon-worker/webapp
+WORKER_CLUSTER_ENABLED=false
+WORKER_CLUSTER_ID=
+WORKER_CLUSTER_HOST=127.0.0.1
+WORKER_CLUSTER_PORT=37401
+WORKER_CLUSTER_PEERS=
+WORKER_CLUSTER_DATA_DIR=/var/lib/rsmon-worker/cluster
+WORKER_CLUSTER_BOOTSTRAP=false
+WORKER_RELEASE_URL=