Add spec for DevSettings (facebook#25084)

Summary:
Part of facebook#24875, adds a spec for DevSettings.

## Changelog

[General] [Added] - TM spec for DevSettings
Pull Request resolved: facebook#25084

Reviewed By: hramos

Differential Revision: D15558093

Pulled By: fkgozali

fbshipit-source-id: 3adcb640a6ad80c84c831905bda114e27177f1fe

Libraries/NativeModules/specs/NativeDevSettings.js

@@ -0,0 +1,28 @@
+/**
+ * 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 {
+  +reload: () => void;
+  +setHotLoadingEnabled: (isHotLoadingEnabled: boolean) => void;
+  +setIsDebuggingRemotely: (isDebuggingRemotelyEnabled: boolean) => void;
+  +setLiveReloadEnabled: (isLiveReloadEnabled: boolean) => void;
+  +setProfilingEnabled: (isProfilingEnabled: boolean) => void;
+  +toggleElementInspector: () => void;
+
+  // iOS only.
+  +setIsShakeToShowDevMenuEnabled: (enabled: boolean) => void;
+}
+
+export default TurboModuleRegistry.getEnforcing<Spec>('DevSettings');