chore: rework examples (#4225)

* remove unused examples

* init bare example with test app

* add react-native-video

* add test app suport in expo plugin

* expo plugin: skip keys that are already in pod file

* fix podfile

* add src files

* fix metro config

* finalize react native test app configuration

* init expo example

* remove old examples

* add guide for example

* Add link to examples apps in docs

* adopt bare example to CI tests

* update CI workflows

* CI build lib after node_modules install

* fix examples readme

* fix iOS CI

* Add Example for DRM

* Update examples/README.md

* fix links

* update examples README

* sync example code

* update README

examples/expo/src/components/Toast.ts

@@ -0,0 +1,18 @@
+import {Alert, ToastAndroid} from 'react-native';
+import {isAndroid} from '../constants';
+
+export const toast = (visible: boolean, message: string) => {
+  if (visible) {
+    if (isAndroid) {
+      ToastAndroid.showWithGravityAndOffset(
+        message,
+        ToastAndroid.LONG,
+        ToastAndroid.BOTTOM,
+        25,
+        50,
+      );
+    } else {
+      Alert.alert(message, message);
+    }
+  }
+};