Capella beacon state (#11141)

* fork

* types

* cloners

* getters

* remove CapellaBlind from fork

* hasher

* setters

* spec params, config tests

* generate ssz

* executionPayloadHeaderCapella

* proto state

* BeaconStateCapella SSZ

* saving state

* configfork

* BUILD files

* fix RealPosition

* fix hasher

* SetLatestExecutionPayloadHeaderCapella

* fix error message

* reduce complexity of saveStatesEfficientInternal

* add latestExecutionPayloadHeaderCapella to minimal state

* halway done interface

* remove withdrawal methods

* merge setters

* change signatures for v1 and v2

* fixing errors pt. 1

* paylod_test fixes

* fix everything

* remove unused func

* fix tests

* state_trie_test improvements

* in progress...

* hasher test

* fix configs

* simplify hashing

* Revert "fix configs"

This reverts commit bcae2825fc.

* remove capella from config test

* unify locking

* review

* hashing

* fixes

Co-authored-by: terencechain <terence@prysmaticlabs.com>
Co-authored-by: Raul Jordan <raul@prysmaticlabs.com>

consensus-types/interfaces/BUILD.bazel

@@ -11,6 +11,7 @@ go_library(
     deps = [
         "//config/fieldparams:go_default_library",
         "//consensus-types/primitives:go_default_library",
+        "//proto/engine/v1:go_default_library",
         "//proto/prysm/v1alpha1:go_default_library",
         "//proto/prysm/v1alpha1/validator-client:go_default_library",
         "@com_github_pkg_errors//:go_default_library",