Add performance marker for Fast Refresh update (facebook#54154)

Summary:
Pull Request resolved: facebook#54154

Adds a prominent vertical "Fast Refresh ⚛︎" marker entry in the performance timeline when a Fast Refresh update is complete.

This is available in apps with `performance.mark()` enabled (Canary feature).

Changelog: [Internal]

Reviewed By: hoxyq

Differential Revision: D84624705

fbshipit-source-id: 6c0ae0b8ae0acaaaba559a1854f64218bf5feabb

Author: huntie

packages/react-native/Libraries/Utilities/HMRClient.js

@@ -233,6 +233,15 @@ Error: ${e.message}`;
       pendingUpdatesCount--;
       if (pendingUpdatesCount === 0) {
         DevLoadingView.hide();
+        performance.mark('Fast Refresh - Update done', {
+          detail: {
+            devtools: {
+              dataType: 'marker',
+              color: 'primary',
+              tooltipText: 'Fast Refresh \u269b',
+            },
+          },
+        });
       }
     });