Docs: Add "Summarize Youtube videos" tutorial for Go.

[yamirghofran]

Currently, this tutorial only exists for Javascript. It would be great to have it for Go as well.

I would love to create a PR for this if possible.

[abdallahshaban557]

Hi @yamirghofran - if you are open to creating a PR for this - please feel free to do so! We can review it once you have it ready!