add endpoint for listing repos while serving in api mode and add more metrics

api/files.go

@@ -109,6 +109,7 @@ func apiFilesUpload(c *gin.Context) {
 		}
 	}
 
+	apiFilesUploadedCounter.WithLabelValues(c.Params.ByName("dir")).Inc()
 	c.JSON(200, stored)
 
 }