[improvement](project) Adding tag abstraction to the dictionary and optimizing related code. (#785)

chat/api/src/main/java/com/tencent/supersonic/chat/api/pojo/SemanticSchema.java

@@ -43,6 +43,9 @@ public class SemanticSchema implements Serializable {
             case VALUE:
                 element = getElementsById(elementID, getDimensionValues());
                 break;
+            case TAG:
+                element = getElementsById(elementID, getTags());
+                break;
             default:
         }