Log when BAZEL_APPLE_LAUNCH_INFO_PATH finishes writing (#2871)

Author: rockbruno

apple/internal/templates/apple_device.template.py

@@ -501,6 +501,9 @@ def launch_app(
               },
               indent=2,
           ))
+        logger.info(
+          "Successfully written launch info to: %s", launch_info_path
+        )
       else:
           logger.error("Failed to find PID in JSON output")
   except Exception as e:

apple/internal/templates/apple_simulator.template.py

@@ -809,6 +809,9 @@ def launch_app(
               },
               indent=2,
           ))
+        logger.info(
+          "Successfully written launch info to: %s", launch_info_path
+        )
       except Exception as e:
         logger.error("Failed to write launch info to file: %s", e)
     else: