feat(rn) add toggleCamera action

android/sdk/src/main/java/org/jitsi/meet/sdk/BroadcastAction.java

         CLOSE_CHAT("org.jitsi.meet.CLOSE_CHAT"),
         SEND_CHAT_MESSAGE("org.jitsi.meet.SEND_CHAT_MESSAGE"),
         SET_VIDEO_MUTED("org.jitsi.meet.SET_VIDEO_MUTED"),
-        SET_CLOSED_CAPTIONS_ENABLED("org.jitsi.meet.SET_CLOSED_CAPTIONS_ENABLED");
+        SET_CLOSED_CAPTIONS_ENABLED("org.jitsi.meet.SET_CLOSED_CAPTIONS_ENABLED"),
+        TOGGLE_CAMERA("org.jitsi.meet.TOGGLE_CAMERA");
 
         private final String action;
 

android/sdk/src/main/java/org/jitsi/meet/sdk/BroadcastIntentHelper.java

         intent.putExtra("requestId", requestId);
         return intent;
     }
+
+    public static Intent buildToggleCameraIntent() {
+        return new Intent(BroadcastAction.Type.TOGGLE_CAMERA.getAction());
+    }
 }

android/sdk/src/main/java/org/jitsi/meet/sdk/ExternalAPIModule.java

         constants.put("SEND_CHAT_MESSAGE", BroadcastAction.Type.SEND_CHAT_MESSAGE.getAction());
         constants.put("SET_VIDEO_MUTED", BroadcastAction.Type.SET_VIDEO_MUTED.getAction());
         constants.put("SET_CLOSED_CAPTIONS_ENABLED", BroadcastAction.Type.SET_CLOSED_CAPTIONS_ENABLED.getAction());
+        constants.put("TOGGLE_CAMERA", BroadcastAction.Type.TOGGLE_CAMERA.getAction());
 
         return constants;
     }

ios/sdk/src/ExternalAPI.h

 - (void)sendChatMessage:(NSString*)message :(NSString*)to ;
 - (void)sendSetVideoMuted:(BOOL)muted;
 - (void)sendSetClosedCaptionsEnabled:(BOOL)enabled;
+- (void)toggleCamera;
 
 @end

ios/sdk/src/ExternalAPI.m

 static NSString * const sendChatMessageAction = @"org.jitsi.meet.SEND_CHAT_MESSAGE";
 static NSString * const setVideoMutedAction = @"org.jitsi.meet.SET_VIDEO_MUTED";
 static NSString * const setClosedCaptionsEnabledAction = @"org.jitsi.meet.SET_CLOSED_CAPTIONS_ENABLED";
+static NSString * const toggleCameraAction = @"org.jitsi.meet.TOGGLE_CAMERA";
 
 @implementation ExternalAPI
 
         @"CLOSE_CHAT": closeChatAction,
         @"SEND_CHAT_MESSAGE": sendChatMessageAction,
         @"SET_VIDEO_MUTED" : setVideoMutedAction,
-        @"SET_CLOSED_CAPTIONS_ENABLED": setClosedCaptionsEnabledAction
+        @"SET_CLOSED_CAPTIONS_ENABLED": setClosedCaptionsEnabledAction,
+        @"TOGGLE_CAMERA": toggleCameraAction
     };
 };
 
               closeChatAction,
               sendChatMessageAction,
               setVideoMutedAction,
-              setClosedCaptionsEnabledAction
+              setClosedCaptionsEnabledAction,
+              toggleCameraAction
     ];
 }
 
     [self sendEventWithName:setClosedCaptionsEnabledAction body:data];
 }
 
+- (void)toggleCamera {
+    [self sendEventWithName:toggleCameraAction body:nil];
+}
+
 @end

ios/sdk/src/JitsiMeetView.h

 - (void)sendChatMessage:(NSString * _Nonnull)message :(NSString * _Nullable)to;
 - (void)setVideoMuted:(BOOL)muted;
 - (void)setClosedCaptionsEnabled:(BOOL)enabled;
+- (void)toggleCamera;
 
 @end

ios/sdk/src/JitsiMeetView.m

     [externalAPI sendSetClosedCaptionsEnabled:enabled];
 }
 
+- (void)toggleCamera {
+    ExternalAPI *externalAPI = [[JitsiMeet sharedInstance] getExternalAPI];
+    [externalAPI toggleCamera];
+}
+
 #pragma mark Private methods
 
 - (void)registerObservers {

react/features/mobile/external-api/middleware.ts

 import {
     JitsiConferenceEvents } from '../../base/lib-jitsi-meet';
 import { SET_AUDIO_MUTED, SET_VIDEO_MUTED } from '../../base/media/actionTypes';
+import { toggleCameraFacingMode } from '../../base/media/actions';
 import { MEDIA_TYPE, VIDEO_TYPE } from '../../base/media/constants';
 import { PARTICIPANT_JOINED, PARTICIPANT_LEFT } from '../../base/participants/actionTypes';
 import {
     eventEmitter.addListener(ExternalAPI.SET_CLOSED_CAPTIONS_ENABLED, ({ enabled }: any) => {
         dispatch(setRequestingSubtitles(enabled));
     });
+
+    eventEmitter.addListener(ExternalAPI.TOGGLE_CAMERA, () => {
+        dispatch(toggleCameraFacingMode());
+    });
 }
 
 /**
     eventEmitter.removeAllListeners(ExternalAPI.CLOSE_CHAT);
     eventEmitter.removeAllListeners(ExternalAPI.SEND_CHAT_MESSAGE);
     eventEmitter.removeAllListeners(ExternalAPI.SET_CLOSED_CAPTIONS_ENABLED);
+    eventEmitter.removeAllListeners(ExternalAPI.TOGGLE_CAMERA);
 }
 
 /**