Replace support libs with AndroidX

android/src/main/java/com/reactnativecommunity/webview/RNCWebViewModule.java

@@ -11,9 +11,9 @@ import android.os.Build;
 import android.os.Environment;
 import android.os.Parcelable;
 import android.provider.MediaStore;
-import android.support.annotation.RequiresApi;
-import android.support.v4.content.ContextCompat;
-import android.support.v4.content.FileProvider;
+import androidx.annotation.RequiresApi;
+import androidx.core.content.ContextCompat;
+import androidx.core.content.FileProvider;
 import android.util.Log;
 import android.webkit.MimeTypeMap;
 import android.webkit.ValueCallback;