Add spec for WebSocketModule (#24893)

Summary:
Part of #24875

## Changelog

[General] [Added] - Add TurboModule spec for WebSocketModule
Pull Request resolved: https://github.com/facebook/react-native/pull/24893

Reviewed By: RSNara

Differential Revision: D15551329

Pulled By: fkgozali

fbshipit-source-id: 59a921c50cc162528b2181fdd4cb1e41e3f1f6eb

Libraries/WebSocket/NativeWebSocketModule.js

@@ -0,0 +1,33 @@
+/**
+ * Copyright (c) Facebook, Inc. and its affiliates.
+ *
+ * This source code is licensed under the MIT license found in the
+ * LICENSE file in the root directory of this source tree.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+'use strict';
+
+import type {TurboModule} from '../TurboModule/RCTExport';
+import * as TurboModuleRegistry from '../TurboModule/TurboModuleRegistry';
+
+export interface Spec extends TurboModule {
+  +connect: (
+    url: string,
+    protocols: ?Array<string>,
+    options: ?{headers?: {origin?: string}},
+    socketID: number,
+  ) => void;
+  +send: (message: string, socketID: number) => void;
+  +sendBinary: (base64String: string, socketID: number) => void;
+  +ping: (socketID: number) => void;
+  +close: (code: number, reason: string, socketID: number) => void;
+
+  // RCTEventEmitter
+  +addListener: (eventName: string) => void;
+  +removeListeners: (count: number) => void;
+}
+
+export default TurboModuleRegistry.getEnforcing<Spec>('WebSocketModule');