Execution Payload / Header Interface Wrappers (#11025)

* exec payload iface

* begin using iface

* use iface more

* build beacon

* builds

* txs field

* fix

* merge test

* pass

* test

* refactor

* fix up builder case

* gaz

* comments

* el test

* build

* no mask

* patch up

* exec wrap

* Terence feedback

* builds

* potuz suggestion

* exec data error

Co-authored-by: prylabs-bulldozer[bot] <58059840+prylabs-bulldozer[bot]@users.noreply.github.com>

consensus-types/interfaces/BUILD.bazel

@@ -10,7 +10,6 @@ go_library(
     visibility = ["//visibility:public"],
     deps = [
         "//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",