Rename EIP-4844 to Deneb

[zilm13]

PR Description

As per ethereum/consensus-specs#3215

Could be merged as is before configs are updated both in spec and in our code

Left 10 TODOs in most of:

• rename config fork version and epoch, both in configs and getters keys (yamls, DenebBuilder.java)
• rename reference tests keyword (TestFork.java), update runner hacks (TransitionTestExecutor.java, ForkUpgradeTestExecutor.java)
• Update all CKZG stuff in this project to not expose 4844 out of the API
• links to spec (BlobsSidecarsByRangeMessageHandler.java, FetchBlockAndBlobsSidecarTask.java)

It's possible to remove them and just left locations of parts needed to be cleaned in meta-issue

Fixed Issue(s)

Documentation

• I thought about documentation and added the doc-change-required label to this PR if updates are required.

Changelog

• I thought about adding a changelog entry, and added one if I deemed necessary.

[mehdi-aouadi]

LGTM or at least didn't see anything weird and the tests are passing 🤞
I'd suggest to add a checklist of the TODOs in the initial issue #6608
I guess it's better to merge it ASAP to avoid conflicts...

[tbenr]

LGTM too