add APIs needed for non legacy NewPipe version

src/api-impl/android/net/ConnectivityManager.java

@@ -1,6 +1,9 @@
 package android.net;
 
 public class ConnectivityManager {
+
+	public class NetworkCallback {}
+
 	public NetworkInfo getNetworkInfo(int networkType) {
 		return null; // this means the network type is not supported, which should make properly coded apps cease any attempts to use network-related APIs
 	}