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
 	}

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

@@ -145,6 +145,10 @@ public class Uri {
 		}
 	}
 
+	public String getScheme() {
+		return uri.getScheme();
+	}
+
 	@Override
 	public String toString() {
 		return String.valueOf(uri);

src/api-impl/android/net/http/X509TrustManagerExtensions.java

@@ -0,0 +1,8 @@
+package android.net.http;
+
+import javax.net.ssl.X509TrustManager;
+
+public class X509TrustManagerExtensions {
+
+	public X509TrustManagerExtensions(X509TrustManager tm) {}
+}

src/api-impl/android/net/nsd/NsdManager.java

@@ -0,0 +1,4 @@
+package android.net.nsd;
+
+public class NsdManager {
+}