Moved some NativeModule JS specs to OSS

Summary:
For some reason the specs were internal, but the native impl is still in github. So let's move these to github for consistency.

Changelog: [Internal]

Reviewed By: hramos

Differential Revision: D21419934

fbshipit-source-id: f2c4486edca43c4348f3a3c6ce98f76a322bab0b

Libraries/TimePickerAndroid/NativeTimePickerAndroid.js

@@ -0,0 +1,31 @@
+/**
+ * (c) Facebook, Inc. and its affiliates. Confidential and proprietary.
+ *
+ * @flow strict-local
+ * @format
+ */
+
+'use strict';
+
+import type {TurboModule} from '../TurboModule/RCTExport';
+import * as TurboModuleRegistry from '../TurboModule/TurboModuleRegistry';
+
+export type TimePickerOptions = {|
+  hour?: number,
+  minute?: number,
+  is24Hour?: boolean,
+  mode?: string,
+|};
+
+export type TimePickerResult = {|
+  action: string,
+  hour: number,
+  minute: number,
+|};
+
+export interface Spec extends TurboModule {
+  // eslint-disable-next-line lint/react-native-modules
+  +open: (options: TimePickerOptions) => Promise<TimePickerResult>;
+}
+
+export default (TurboModuleRegistry.get<Spec>('TimePickerAndroid'): ?Spec);