add ffmpeg and theora to CameraDisplay in plugins_description.xml

Author: Emre Karincali

rviz_default_plugins/plugins_description.xml

@@ -31,8 +31,10 @@
     <description>
       Displays an image from a camera, with the visualized world rendered behind it.  &lt;a href="http://www.ros.org/wiki/rviz/DisplayTypes/Camera"&gt;More Information&lt;/a&gt;.
     </description>
-    <message_type>sensor_msgs/msg/Image</message_type>
+    <message_type>ffmpeg_image_transport_msgs/msg/FFMPEGPacket</message_type>
     <message_type>sensor_msgs/msg/CompressedImage</message_type>
+    <message_type>sensor_msgs/msg/Image</message_type>
+    <message_type>theora_image_transport/msg/Packet</message_type>
   </class>
 
   <class