fluxctl: add page (#6814)

pages/common/fluxctl.md

@@ -0,0 +1,20 @@
+# fluxctl
+
+> Command-line tool for Flux v1.
+> More information: <https://fluxcd.io/legacy/flux/references/fluxctl>.
+
+- List workloads currently running in the cluster on specific namespace:
+
+`fluxctl --k8s-fwd-ns={{namespace}} list-workloads`
+
+- Show deployed and available images:
+
+`fluxctl list-images`
+
+- Synchronize the cluster with the git repository:
+
+`fluxctl sync`
+
+- Turn on automatic deployment for a workload:
+
+`fluxctl automate`