title: Installing additional Java dependencies to react-native library
body: <p>I want to bring more functionality to an existing <code>react-native</code> library - namely to <a href="https://github.com/react-community/react-native-maps" rel="nofollow noreferrer">react-native-maps</a>. In order to do that, I have to add an <a href="https://de.wikipedia.org/wiki/Java_Database_Connectivity" rel="nofollow noreferrer">additional Java library</a>. No I wonder where exactly am I supposed to add the Java library. Do I add here (in a newly created <code>lib</code> folder)
  <a href="https://github.com/react-community/react-native-maps/tree/master/lib/android" rel="nofollow noreferrer">https://github.com/react-community/react-native-maps/tree/master/lib/android</a> or somewhere else? How do I make it "known" to Java?</p>