Adding a notebook demostrating video transcript translate with whisper in AutoGen (#881)

* add agentchat_video_transcript_translate.ipynb

* finish the agentchat_video_transcript_translate.ipynb file notebook

* modify the recognize_transcript_from_video function

* run the script and add the output to the notebook

* implement the notebook

* add the link to the video clip

* rename the file and add the version requirement of each packages

* add the new notebook path

* add the notebook path to Example.md

* add the new notebook path to the new example.md

* add the instruction of FFmpeg and video download

* Update Examples.md

* Update Examples.md

* Update Examples.md

* Update Examples.md

* Delete notebook/agentchat_video_transcript_translate.ipynb

* Update Examples.md and add the link

---------

Co-authored-by: silver233jpg <60947716+silver233jpg@users.noreply.github.com>