Facebook garph api update to v12

[anjali-92]

https://graph.facebook.com/v12.0/oembed_post
https://graph.facebook.com/v12.0/oembed_video
https://graph.facebook.com/v12.0/instagram_oembed

[iamcal]

please submit a pull request!

[ItsWarmaster]

#593 Currently working on update oembed to 2021 version with new providers endpoints and remove no longer supported providers.