Add PHP Core Roundup 20

[Ayesh]

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[pronskiy]

@Ayesh, great post!
Since this one is devoted to the PHP 8.4 release, how about copying/including short paragraphs about Hooks, aviz, HTML%, and BCMath? I know you've already covered them previously, but it's be unfortunate to miss them in this post. What do you think?

[Ayesh]

Thank you, you are right, I also felt a bit weird not including the big changes in this post.

I'll add snippets from the old post and maybe a bit more soon.

[Ayesh]

I added a somewhat minimal copy-pasta from the previous post about aviz and hooks, bcmath, and dom.

[Ayesh]

I'll also add Lazy objects, please do not merge yet :)

[Ayesh]

Ready for review :)

I tried to keep the post minimal to avoid duplication, and linked to all available doc pages on php.net now.

I will keep an eye and update links. php/doc-en#3872) tracks them.