Metric template tempo added

crates/integr-structs/src/api.rs

@@ -160,6 +160,16 @@ pub mod v3 {
         pub json_type : String,
         pub addr : String,
     }
+    impl Metric {
+        pub fn template() -> Self {
+            Self {
+                id : "room_tempo".to_string(),
+                json_type : "String".to_string(),
+                addr : "flat1.room1.rt_tempo".to_string(),
+            }
+        }
+    }
+
     #[derive(Serialize, Deserialize, Clone, Debug)]
     pub struct Metrics {
         pub name : String,