Refactor into monorepo for v6 (#1837)

> You can [learn more about this here](https://blog.invertase.io/react-native-firebase-2019-7e334ca9bcc6).

packages/analytics/ios/RNFBAnalytics/RNFBAnalyticsModule.h

@@ -0,0 +1,24 @@
+/**
+ * Copyright (c) 2016-present Invertase Limited & Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this library except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *   http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+#import <Foundation/Foundation.h>
+
+#import <React/RCTBridgeModule.h>
+
+@interface RNFBAnalyticsModule : NSObject <RCTBridgeModule>
+
+@end