Fix(ios): restore caching feature (#3341)

* chore: fix build issue

* fix: try to fix save typings

* chore: fix podspec

* fix: update integration guide for ios Caching

* fix: update sample to test the save function

---------

Co-authored-by: olivier <olivier.bouillet@ifeelsmart.com>

examples/basic/src/VideoPlayer.tsx

@@ -84,6 +84,10 @@ class VideoPlayer extends Component {
       description: 'Another live sample',
       uri: 'https://live.forstreet.cl/live/livestream.m3u8',
     },
+    {
+      description: 'another bunny (can be saved)',
+      uri: 'https://rawgit.com/mediaelement/mediaelement-files/master/big_buck_bunny.mp4'
+    }
   ];
 
   srcIosList = [
@@ -590,6 +594,18 @@ class VideoPlayer extends Component {
                   onPress={this.onResizeModeSelected}
                   selected={this.state.resizeMode}
                 />
+                <ToggleControl
+                  isSelected={this.state.paused}
+                  onPress={() => {
+                      this.video?.save({}).then((response) => {
+                        console.log('Downloaded URI', response);
+                      }).catch((error) => {
+                        console.log('error during save ', error)
+                      });
+                    }
+                  }
+                  text='save'
+                />
               </View>
               {this.renderSeekBar()}
               <View style={styles.generalControls}>