Chore: Add more metrics to annotation service to see its usage (#112651)

pkg/services/annotations/annotationsimpl/annotations.go

@@ -40,7 +40,7 @@ func ProvideService(
 	l := log.New("annotations")
 	l.Debug("Initializing annotations service")
 
-	xormStore := NewXormStore(cfg, log.New("annotations.sql"), db, tagService)
+	xormStore := NewXormStore(cfg, log.New("annotations.sql"), db, tagService, reg)
 	write := xormStore
 
 	var read readStore