* Add the new Fulu state with the new field
* fix the hasher for the fulu state
* Fix ToProto() and ToProtoUnsafe()
* Add the fields as shared
* Add epoch transition code
* short circuit the proposer cache to use the state
* Marshal the state JSON
* update spectests to 1.6.0-alpha.1
* Remove deneb and electra entries from blob schedule
This was cherry picked from PR #15364
and edited to remove the minimal cases
* Fix minimal tests
* Increase deadling for processing blocks in spectests
* Preston's review
* review
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Co-authored-by: terence tsao <terence@prysmaticlabs.com>
