Add label support

pkg/confluence/api.go

@@ -434,7 +434,7 @@ func (api *API) CreatePage(
 }
 
 func (api *API) UpdatePage(
-	page *PageInfo, newContent string,
+	page *PageInfo, newContent string, newLabels []string,
 ) error {
 	nextPageVersion := page.Version.Number + 1
 
@@ -450,6 +450,17 @@ func (api *API) UpdatePage(
 		{"id": page.Ancestors[len(page.Ancestors)-1].Id},
 	}
 
+	labels := []map[string]interface{}{}
+	for _, label := range newLabels {
+		if label != "" {
+			item := map[string]interface{}{
+				"prexix": "global",
+				"name":   label,
+			}
+			labels = append(labels, item)
+		}
+	}
+
 	payload := map[string]interface{}{
 		"id":    page.ID,
 		"type":  "page",
@@ -465,6 +476,9 @@ func (api *API) UpdatePage(
 				"representation": "storage",
 			},
 		},
+		"metadata": map[string]interface{}{
+			"labels": labels,
+		},
 	}
 
 	request, err := api.rest.Res(