Admin UI: Add message queue to admin UI (#6958)

* add a menu item "Message Queue"

* add a menu item "Message Queue"
  * move the "brokers" link under it.
  * add "topics", "subscribers". Add pages for them.

* refactor

* show topic details

* admin display publisher and subscriber info

* remove publisher and subscribers from the topic row pull down

* collecting more stats from publishers and subscribers

* fix layout

* fix publisher name

* add local listeners for mq broker and agent

* render consumer group offsets

* remove subscribers from left menu

* topic with retention

* support editing topic retention

* show retention when listing topics

* create bucket

* Update s3_buckets_templ.go

* embed the static assets into the binary

fix https://github.com/seaweedfs/seaweedfs/issues/6964

weed/admin/handlers/cluster_handlers.go

@@ -215,6 +215,33 @@ func (h *ClusterHandlers) ShowClusterFilers(c *gin.Context) {
 	}
 }
 
+// ShowClusterBrokers renders the cluster message brokers page
+func (h *ClusterHandlers) ShowClusterBrokers(c *gin.Context) {
+	// Get cluster brokers data
+	brokersData, err := h.adminServer.GetClusterBrokers()
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to get cluster brokers: " + err.Error()})
+		return
+	}
+
+	// Set username
+	username := c.GetString("username")
+	if username == "" {
+		username = "admin"
+	}
+	brokersData.Username = username
+
+	// Render HTML template
+	c.Header("Content-Type", "text/html")
+	brokersComponent := app.ClusterBrokers(*brokersData)
+	layoutComponent := layout.Layout(c, brokersComponent)
+	err = layoutComponent.Render(c.Request.Context(), c.Writer)
+	if err != nil {
+		c.JSON(http.StatusInternalServerError, gin.H{"error": "Failed to render template: " + err.Error()})
+		return
+	}
+}
+
 // GetClusterTopology returns the cluster topology as JSON
 func (h *ClusterHandlers) GetClusterTopology(c *gin.Context) {
 	topology, err := h.adminServer.GetClusterTopology()