Remove Twitter integration

[Sebobo]

Twitter does not exist anymore and Mastodon and probably other (newer) networks uses OpenGraph.

[Sebobo]

Feedback and opinions are welcome how we should proceed here.
Other CMS are already removing their integrations afaik.

[jonnitto]

We could also just remove the mixins from Neos.Neos:Page. That way, it would be easy to activate it if someone want's to use it.

[paavo]

We always disabled the "Twitter-Integration" and sticked to OpenGraph only.
I would vote for removing for a cleaner code base.

[kdambekalns]

Does "X" read OpenGraph? If so, by all means, get rid of it. It not, we might want to leave it in but disable it by default, as @jonnitto suggested.

Possibly tweak the labels to read "X (formerly known as Twitter)". 🤣

[Sebobo]

According to their docs they use OpenGraph if available https://developer.twitter.com/en/docs/twitter-for-websites/cards/guides/getting-started#opengraph except for twitter:site twitter:card and twitter:creator, which are "X"-exclusive.
So at least we could remove some of the other attributes in any case.

Another option would be to create a separate package that implements "X" and extends Neos.Seo.

But right now I wouldn't even know what to call things, as the naming could be different next week already again 🤪

[kdambekalns]

But right now I wouldn't even know what to call things, as the naming could be different next week already again

Well, "X" can stay, it looks like a placeholder anyway. 🤷

[Sebobo]

So I created a PR to remove everything for Neos 9.

I would leave the rest to the community and for now don't change much for the 3.x branch as long as nothing breaks from their side.