Add Electra fork boilerplate (#5122)

* Add Electra fork boilerplate

* Remove electra from spec tests

* Fix tests

* Remove sneaky log file

* Fix more tests

* Fix even more tests and add suggestions

* Remove unrelated lcli addition

* Update more tests

* Merge branch 'unstable' into electra

* Add comment for test-suite lcli override

* Merge branch 'unstable' into electra

* Cleanup

* Merge branch 'unstable' into electra

* Apply suggestions

* Merge branch 'unstable' into electra

* Merge sigp/unstable into electra

* Merge branch 'unstable' into electra

lcli/src/parse_ssz.rs

@@ -81,6 +81,11 @@ pub fn run_parse_ssz<T: EthSpec>(
         "SignedBeaconBlockDeneb" => {
             decode_and_print(&bytes, SignedBeaconBlockDeneb::<T>::from_ssz_bytes, format)?
         }
+        "SignedBeaconBlockElectra" => decode_and_print(
+            &bytes,
+            SignedBeaconBlockElectra::<T>::from_ssz_bytes,
+            format,
+        )?,
         "BeaconState" => decode_and_print::<BeaconState<T>>(
             &bytes,
             |bytes| BeaconState::from_ssz_bytes(bytes, spec),
@@ -101,6 +106,9 @@ pub fn run_parse_ssz<T: EthSpec>(
         "BeaconStateDeneb" => {
             decode_and_print(&bytes, BeaconStateDeneb::<T>::from_ssz_bytes, format)?
         }
+        "BeaconStateElectra" => {
+            decode_and_print(&bytes, BeaconStateElectra::<T>::from_ssz_bytes, format)?
+        }
         "BlobSidecar" => decode_and_print(&bytes, BlobSidecar::<T>::from_ssz_bytes, format)?,
         other => return Err(format!("Unknown type: {}", other)),
     };