Don't allow camera and mic permissions by default. Notify user about permission request

example/examples/Permission.tsx

@@ -0,0 +1,27 @@
+import React, {Component} from 'react';
+import {Text, View} from 'react-native';
+
+import WebView from 'react-native-webview';
+
+type Props = {};
+type State = {};
+
+export default class Permission extends Component<Props, State> {
+  state = {};
+
+  render() {
+    return (
+      <View style={{ height: 120 }}>
+        <WebView
+          ref={(ref) => (this.webview = ref)}
+          onPermissionRequest={(event) => {
+              console.log("!!! JS: onPermissionRequest, event: ", event.nativeEvent);
+              this.webview.answerPermissionRequest(false, event.nativeEvent.resources );
+          }}
+            source={{uri: 'https://fatal0.netlify.app/android/webviewvideo.html'}}
+          automaticallyAdjustContentInsets={false}
+        />
+      </View>
+    );
+  }
+}