Stream server logs to browser

Summary: Makes Flipper Logs tab functional for Flipper Browser

Reviewed By: lblasa

Differential Revision: D37459924

fbshipit-source-id: 4ebf3d47fbbf90bb367e01986b12dec782b03c34

desktop/flipper-ui-browser/src/index.tsx

@@ -45,6 +45,14 @@ async function start() {
     },
   );
 
+  flipperServer.on('server-log', (logEntry) => {
+    console[logEntry.type](
+      `[${logEntry.namespace}] (${new Date(
+        logEntry.time,
+      ).toLocaleTimeString()}): ${logEntry.msg}`,
+    );
+  });
+
   await flipperServer.connect();
   const flipperServerConfig = await flipperServer.exec('get-config');