Track bootstrap diagnostics

Summary:
^

In addition to logging to the console bootstrap performance metrics, track these events to scuba as well.

Reviewed By: aigoncharov

Differential Revision: D46648876

fbshipit-source-id: 191704c13158884bb8cfbca614a23f2a64f1fd93

desktop/flipper-server-core/src/index.tsx

@@ -9,6 +9,7 @@
 
 export {FlipperServerImpl} from './FlipperServerImpl';
 export {loadSettings} from './utils/settings';
+export * from './utils/tracker';
 export {loadLauncherSettings} from './utils/launcherSettings';
 export {loadProcessConfig} from './utils/processConfig';
 export {getEnvironmentInfo} from './utils/environmentInfo';

desktop/flipper-server-core/src/utils/tracker.tsx

@@ -22,7 +22,20 @@ type AppConnectionCertificateExchangePayload = AppConnectionPayload & {
   error?: string;
 };
 
+type ServerBootstrapPerformancePayload = {
+  loggerInitializedMS: number;
+  keytarLoadedMS: number;
+  runningInstanceShutdownMS: number;
+  httpServerStartedMS: number;
+  serverCreatedMS: number;
+  companionEnvironmentInitializedMS: number;
+  appServerStartedMS: number;
+  developmentServerAttachedMS: number;
+  serverStartedMS: number;
+};
+
 type TrackerEvents = {
+  'server-bootstrap-performance': ServerBootstrapPerformancePayload;
   'server-started': {port: number; tcp: boolean};
   'server-auth-token-verification': {
     successful: boolean;